CN1181645A - Rotary elastic electrical connection method and device - Google Patents
Rotary elastic electrical connection method and device Download PDFInfo
- Publication number
- CN1181645A CN1181645A CN 96120295 CN96120295A CN1181645A CN 1181645 A CN1181645 A CN 1181645A CN 96120295 CN96120295 CN 96120295 CN 96120295 A CN96120295 A CN 96120295A CN 1181645 A CN1181645 A CN 1181645A
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- socket
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- metal contact
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- roof pressure
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- 238000000034 method Methods 0.000 title claims description 40
- 239000002184 metal Substances 0.000 claims description 42
- 229910052751 metal Inorganic materials 0.000 claims description 42
- 239000000284 extract Substances 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 9
- 239000004020 conductor Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
A rotary resilient type of electrically connecting device suitable for different sockets used for computer, communication device and electronic instrument features that said device is composed of rotary resilient plug with guide slot and contact piece A and rotary resilient socket with safe boss and contact piece B. The A is matched with B to realize electric connection. Its advantages are reasonable structure reliable connection and preventing electric shock.
Description
The present invention relates to a kind of rotary elastic electrical connection method and device, this method and device are specially adapted to appliance plug and socket, wiring board, magazine socket, special-purpose active socket etc.
At present, common electrically connected method is a card edge type, promptly inserts (energising), extracts (outage); System directly inserts the plug of electrical appliance in the jack of the socket that has power supply, reaches the electricity consumption purpose.This kind electrically connected method and device are fairly simple, convenient, but can not guarantee synchronous insertion, cause often " starting the arc ", the waste electric energy, even lead to and use electrification; This kind electrically connected method and device danger are bigger, and often because of because of carelessness hand or conducting objects feeding jack being got an electric shock, casualty accident happens occasionally people (particularly child); This kind electrically connected method and device reliability are relatively poor, loose contact often occurs, and even plug fault such as come off; Historical facts or anecdotes can not be satisfactory in using.
In order to overcome existing electrically connected method and to install dangerous, shortcomings such as danger is big, waste electric energy, poor reliability, special a kind of simple in structure, esy to use, safe and reliable, rotary elastic electrical connection method and device that cost is low proposed, to remedy present deficiency.
According to the present invention, a kind of rotary elastic electrical connection method and device, the feature of its device is that this device comprises at least one rotary spring back socket and at least one spring and at least one rotary spring back plug; Has a grafting keyhole on the plug connector of described rotary spring back socket at least, be processed with projection on the hole wall of grafting keyhole with the grafting bolt of rotary spring back plug on direction recess and corresponding security protection boss of metal contact A shape and the metal contact B that links to each other with lead, the number of this security protection boss and metal contact B, mutually on position and the grafting bolt of relative position and relative plug connector central axis direction recess and the number of metal contact A, mutual relative position and relative position of pegging graft the bolt central axis be consistent, mate; Be processed with at least two direction recess on the grafting bolt of described rotary spring back plug, the end of direction recess has at least one metal contact A that links to each other with lead; Metal contact B on the metal contact A of described direction recess end and the rotary spring back socket is meshed by the resilience force of spring.The rotary spring back plug can be with parts deep processing all-in-one-piece separate components such as grafting bolt, leads, can also be by manually each parts being assembled the all-in-one-piece assembly, can also be to be the assembly of one with electrical appliance; Direction recess on the grafting bolt can be J type, L type, U type or other multiple shape, and wherein J-shaped is better.The plug connector of rotary spring back socket can be a separate component, can also be the assembly that is processed as one with socket cover; Preferably include the thimble post with safety electric shock-prevention function and guide-localization function in the rotary spring back socket, this thimble post can be a separate component, can also be the assembly that is processed as one with socket box.Spring preferably is enclosed within on the thimble post, and the cooperation position that can fix spring by big step post on the thimble post or locating part; Certainly, spring also can be arranged in the centre hole of grafting bolt or other position that is fit to as required.
According to the present invention, a kind of rotary elastic electrical connection method and device, its method is with the grafting keyhole on the insertion of the grafting bolt contraposition on the plug socket (also the plug connector contraposition on the socket can be injected the grafting bolt on the plug), apply roof pressure power and rotary connector (some special purpose is rotatable socket also) simultaneously, back releasing roof pressure power puts in place, promptly metal contact A that forces grafting bolt (or socket) to retreat to make on the plug by the resilience force of spring and the metal contact B on the socket are meshing with each other and finish electrical connection, then plug (or socket) roof pressure is put in place when taking off and the derotation return can be extracted, insert roof pressure, be rotated in place, remove roof pressure---resilience engagement (energising), roof pressure (outage) puts in place, derotation is extracted, method; Promptly earlier with the grafting keyhole on the grafting bolt contraposition socket on the plug, again plug is applied roof pressure power, lead security protection boss on the grafting keyhole hole wall on the socket into by the grafting bolt with the length of spring compressed that is mated and with the direction recess contraposition, the center of circle with the grafting bolt after waiting to put in place is a rotary connector and puts (process of whole reeve and rotation puts in place like clockwork by the direction recess guiding) in place, remove roof pressure power at last, be electrically connected and promptly finish (make the metal contact A of the direction recess end that is positioned on the plug be located on the security protection boss back on the socket this moment owing to the resilience force of spring forces the grafting bolt to retreat metal contact B is meshing with each other and finishes electrical connection); Then the plug roof pressure is put in place when taking off and the reverse rotation return, can extract and (travel forward length of spring compressed by bolt owing to inserting after applying roof pressure power, the reverse rotation plug makes direction recess be threaded to the direction recess sidewall along the security protection boss and contacts with the security protection boss after putting in place, can extract).
A kind of rotary spring back arrangements of electric connection can be made as metal, macromolecular material etc. by multiple material, can pass through kinds of processes, forms as methods such as mold pressing, machine work, injection mouldings.Spring on this device preferably adopts spring steel wire manufacturing, and its geometry is preferably cylindrical, and can select its intensity according to the needs that are electrically connected.Plug, socket cover, plug connector, socket box preferably adopt insulating material to make (except plain conductor and the metal contact etc.).The profile of socket cover and socket box can be decided as required; Socket box can have one or more entrance hole, and socket box also can be processed into one with lead.
This invention has following major advantage: (1) applied range, be applicable to computer, phonotape and videotape establish put forth energy, communication equipment, radio component parts, electronic instrument, aerospace equipment etc., be specially adapted to plug and socket, wiring board, magazine socket, special-purpose active socket of household electrical appliance etc.; (2) can guarantee safety, prevent to get an electric shock, reduce significantly " starting the arc "; (3) material is easy to get, and technology is simple, can save a large amount of metal materials, and cost is low; (4) but standardization can exchange, general; (5) rational in infrastructure, easy and simple to handle, patch dependable performance, be electrically connected effective.
The embodiments of the invention accompanying drawings is as follows:
This device mainly have drawn from metal, macromolecular material etc. form through methods such as mold pressing, machine work, injection mouldings.
Fig. 1 is the main cross-sectional schematic of the signal used of the assembling of a kind of embodiment of the present invention;
Fig. 2 is the A-A cross-sectional schematic of Fig. 1;
Fig. 3 is the left cross-sectional schematic of Fig. 1;
Fig. 4 partly cuts open the rule schematic diagram for the master of the rotary spring back plug (electrical appliance and grafting bolt are one) of Fig. 1;
Fig. 5 is the left cross-sectional schematic of Fig. 4;
Fig. 6 looks schematic diagram for the right side of Fig. 7;
Fig. 7 is the main cross-sectional schematic of plug connector of the rotary spring back socket of Fig. 1;
Fig. 8 looks schematic diagram for the master of the thimble seat of the rotary spring back socket of Fig. 1;
Fig. 9 looks schematic diagram for the right side of Fig. 8;
Figure 10 looks schematic diagram for the left side of Fig. 8;
Figure 11 looks schematic diagram for the master of the socket cover (socket box of this embodiment is identical with it) of the rotary spring back socket of Fig. 1;
Figure 12 is the right cross-sectional schematic of Figure 11;
Figure 13 is the main cross-sectional schematic of the signal used of the assembling of another kind of embodiment of the present invention;
Figure 14 is the B-B cross-sectional schematic of Figure 13;
Figure 15 is the left cross-sectional schematic of Figure 13;
Figure 16 looks schematic diagram for the master of the rotary spring back plug of Figure 13;
Figure 17 is the left cross-sectional schematic of Figure 16;
Figure 18 looks schematic diagram for the master with the rotary spring back plug of supporting another specification of the rotary spring back socket of Figure 13;
Figure 19 is the left cross-sectional schematic of Figure 18;
Figure 20 is the C-C revolved section schematic diagram of Figure 19;
Figure 21 is the main cross-sectional schematic of the signal used of the assembling of another kind of embodiment of the present invention;
Figure 22 is the D one D cross-sectional schematic of Figure 21;
Figure 23 is the E-E cross-sectional schematic of Figure 21;
(Fig. 1 to Fig. 3 is rotary spring back socket---the gold on the active socket to please refer to Fig. 1 to Figure 12 When the metal contact A on the rotary spring back plug that genus contact B is same with electric cooker is integrated is meshed Situation). At first by required specification, shape, size, appearance design, process with J Shape direction recess (19) and be positioned at J-shaped direction recess end metal contact A (24) and with electric cooker (3) The rotary spring back plug (2) that is integrated processes with grafting keyhole (22), security protection protruding The plug connector (4) of platform (5), metal contact piece B (21) processes the thimble seat with thimble post (12) (11), process socket cover (15) and socket with entrance hole (16) and coupling bolt hole (29) Box (30) processes spring (10), then spring (10) contraposition is enclosed within on the thimble post (12), and It is inner that locating part (13) is injected locating part hole (27), will pass through hold-down bolt (8) again and compress spiral shell The plug connector (4) that female (9) connect lead (6) with socket plain conductor (7) is from its grafting keyhole (2 2) contraposition packs into thimble post (12), and thereafter isolating wire board (28) contraposition with thimble seat (11) is stuck in socket The locating piece (25) of lid is inner, and while plug connector (4) also contraposition has been stuck in the socket cover, last contraposition The same socket box of socket cover (15) (30) is built and attachment bolt (14) is screwed, fixes, namely prepare Ready. During use, with lead (6) plugged of socket (1), pinch again socket (1) with it earlier Plug connector (4) contraposition is injected plug-bolt by the guiding of the J-shaped direction recess (19) on the plug (2) (18) [the thimble post (12) on socket this moment (1) has also inserted the centre hole (23) on the plug-bolt (18) In, simultaneously, it is inner that the security protection boss (5) on the socket (1) has also entered J-shaped direction recess (19)], Then socket is applied pressure on top surface with spring (10) compression, socket cover to be pressed onto (15) and electric cooker (3) The socket (1) that turns clockwise during contact, remove a pressure on top surface after forwarding the position to---hand is unclamped, namely Screen resilience by spring (10) forces socket (1) to retreat, and makes metal contact A and metal contact piece B mutual Mesh and plugged, reach the purpose of electricity consumption. In the time of need taking off, then pinch earlier socket (1) and execute Add pressure on top surface (i.e. outage), be pressed onto counter clockwise direction rotary socket (1) behind the position, make its security protection Boss (5) is threaded to the import of J-shaped direction recess along J-shaped direction recess (19), and [boss this moment (5) withstands Groove (19) lateral margin], socket (1) can be extracted (if only need cut off the power supply, then not needing socket is extracted). Figure (17) is the plain conductor of plug, and (26) are the via hole of attachment bolt.
[Figure 13 to Figure 15 is same for the metal contact piece 8 on the socket (wiring board) to please refer to Figure 13 to Figure 20 Situation when the metal contact A on the plug is meshed]. At first by required specification, shape, chi Very little, appearance design process above its plug-bolt (18) with J-shaped direction recess (19) and are positioned at J The rotary spring back plug (2) of the metal contact A (24) of shape direction recess end processes with inserting Connect keyhole (22), security protection boss (5), metal contact piece B (21) and be integrated with socket cover (15) Plug connector (4), process the socket box (30) with thimble post (12), process spring (10), Respectively spring (10) contraposition is enclosed within on the thimble post then, and utilizes big step on the thimble post (12) Post will weld chucking location, spring bottom by hold-down bolt (8) more with socket plain conductor (7) The clamp nut that is integrated (9) connects with lead (6), at last with the same socket of socket cover (15) contraposition Box (30) is built and attachment bolt (14) is tightened up, and namely standard is put forth energy ready. During use, pinch with hand earlier Plug (2) passes through the guiding of (19) and (12) with the grafting keyhole (2 of plug-bolt (18) socket (1) 2) inner, apply then pressure on top surface with spring (10) compression, when plug body to be pressed onto contacts with socket cover Be dextrorotation patch plug (2), (namely forwarding security protection boss (5) to, to withstand J-shaped guiding recessed to forward the position to The side picture of groove (19)) remove pressure on top surface after, namely the screen resilience by spring forces plug (2) to retreat, and makes Metal contact A (24) is meshed and plugged with metal contact piece B (21), reaches the purpose of electricity consumption. In the time of need taking off, then pinch plug with hand earlier and apply pressure on top surface (i.e. outage), it is counterclockwise rear to be pressed onto the position Rotary connector, [security protection boss this moment (5) has withstood J-shaped direction recess (19) when waiting to turn to motionless Another lateral margin] can extract. (17) are the plain conductor of plug among the figure, and (20) are solder joint, (23) Be centre hole.
Please refer to Figure 21 to Figure 23 [situation when being meshed with the metal contact A on the plug] for the metal contact B on the socket (magazine socket).At first by required specification, shape, size, appearance design, process the rotary spring back plug (2) that has J-shaped direction recess (19) on its grafting bolt (18) and be positioned at the metal contact A (24) of J-shaped direction recess end, process and have security protection boss (5) and metal contact B (21) on its grafting keyhole and be the plug connector of one (4) with socket cover (15), process the socket box (30) that has thimble post (12), process spring (10), respectively spring (10) contraposition is enclosed within on the thimble post (12) then, and utilize the big step post on the thimble post that spring bottom chucking is located, to connect for clamp nut of one (9) and lead (6) with socket plain conductor (7) weldering by hold-down bolt (8) again, to build by guide pad (32) for the same socket box of the socket cover of one (15) contraposition (30) with plug connector (4) and attachment bolt (14) be tightened up at last, promptly ready.The method of manipulating of present embodiment is identical with Figure 13 to Figure 20 with process, just repeats no more here.(1) is the rotary spring back socket among the figure, and (16) are entrance hole, and (17) are the plain conductor of plug, and (31) are wall.
Claims (3)
1, a kind of rotary elastic electrical connection method and device, its method is with the grafting keyhole on the insertion of the grafting bolt contraposition on the plug socket, apply roof pressure power and rotary connector simultaneously, back releasing roof pressure power puts in place, promptly force the grafting bolt to retreat to make metal contact A on the plug and the metal contact B on the socket to be meshing with each other and finish electrical connection by the resilience force of spring, then the plug roof pressure is put in place when taking off and the derotation return can be extracted, insert roof pressure, be rotated in place, remove a pressure---resilience engagement (energising), roof pressure (outage) puts in place, derotation is extracted, method, promptly earlier with the grafting keyhole on the grafting bolt contraposition socket on the plug, again plug is applied roof pressure power, lead security protection boss on the grafting keyhole hole wall on the socket into by the grafting bolt with the length of spring compressed that is mated and with the direction recess contraposition, the center of circle with the grafting bolt after waiting to put in place is a rotary connector and puts (process of whole reeve and rotation puts in place like clockwork by the direction recess guiding) in place, remove roof pressure power at last, be electrically connected and promptly finish (make the metal contact A of the direction recess end that is positioned on the plug be located on the security protection boss back on the socket this moment owing to the resilience force of spring forces the grafting bolt to retreat metal contact B is meshing with each other and finishes electrical connection), then the plug roof pressure is put in place when taking off and the reverse rotation return, can extract and (apply after the roof pressure power because the grafting bolt travels forward length of spring compressed, back reverse rotation plug puts in place, make direction recess be threaded to the direction recess sidewall and contact, can extract) with the security protection boss along the security protection boss.
2, a kind of rotary elastic electrical connection method and device, its method is with the grafting bolt on the reeve of the plug connector contraposition on the socket plug, apply roof pressure power and rotary socket then, back releasing roof pressure power puts in place, promptly force socket to retreat to make metal contact A on the plug and the metal contact B on the socket to be meshing with each other and finish electrical connection by the resilience force of spring, then the socket roof pressure is put in place when taking off and the derotation return can be extracted, insert roof pressure, be rotated in place, remove a pressure---resilience engagement (energising), roof pressure (outage) puts in place, derotation is extracted, method.
3, a kind of rotary elastic electrical connection method and device, the feature of its device is that this device comprises at least one rotary spring back socket and at least one spring and at least one rotary spring back plug, has a grafting keyhole on the plug connector of described rotary spring back socket at least, be processed with projection on the hole wall of grafting keyhole with the grafting bolt of rotary spring back plug on direction recess and corresponding security protection boss of metal contact A shape and the metal contact B that links to each other with lead, the number of this security protection boss and metal contact B, the number of direction recess and metal contact A on the position of mutual relative position and relative plug connector central axis and the grafting bolt, the position of the relative position and the bolt central axis of pegging graft relatively is consistent mutually, coupling, be processed with at least two direction recess on the grafting bolt of described rotary spring back plug, the end of direction recess has at least one metal contact A that links to each other with lead, and the metal contact B on the metal contact A of described direction recess end and the rotary spring back socket is meshed by the resilience force of spring.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96120295 CN1094667C (en) | 1996-11-06 | 1996-11-06 | Rotary elastic electrical connection method and device |
| US08/934,363 US6022235A (en) | 1996-11-06 | 1997-09-19 | Electric connector |
| DE29718003U DE29718003U1 (en) | 1996-11-06 | 1997-10-10 | Electrical connection device |
| JP1997009033U JP3047988U (en) | 1996-11-06 | 1997-10-13 | Electrical connector |
| NL1007275A NL1007275C1 (en) | 1996-11-06 | 1997-10-14 | Electric connector. |
| FR9713081A FR2755545B3 (en) | 1996-11-06 | 1997-10-15 | ELECTRICAL CONNECTOR |
| GB9721736A GB2319122B (en) | 1996-11-06 | 1997-10-15 | Electric connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96120295 CN1094667C (en) | 1996-11-06 | 1996-11-06 | Rotary elastic electrical connection method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1181645A true CN1181645A (en) | 1998-05-13 |
| CN1094667C CN1094667C (en) | 2002-11-20 |
Family
ID=5126253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96120295 Expired - Lifetime CN1094667C (en) | 1996-11-06 | 1996-11-06 | Rotary elastic electrical connection method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1094667C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051718B (en) * | 2006-04-03 | 2011-04-20 | 张宁 | Novel electric connector for electric tool and device |
| CN102655283A (en) * | 2011-03-03 | 2012-09-05 | 张宁 | Earthed telescopic pressing-type civil electrical connecting device as well as plug and socket thereof |
| CN102655281A (en) * | 2011-03-03 | 2012-09-05 | 张宁 | Earthed telescopic meshed-type civil electrical connecting device as well as plug and socket thereof |
| CN102683957A (en) * | 2011-03-10 | 2012-09-19 | 张宁 | Telescopic welding cable coupling device |
| CN106953121A (en) * | 2017-03-15 | 2017-07-14 | 深圳市信宇人科技有限公司 | Lithium battery heating system and its lithium battery baking line |
| CN108495675A (en) * | 2015-11-27 | 2018-09-04 | 赛诺菲-安万特德国有限公司 | medicament injection apparatus |
| CN110098542A (en) * | 2019-06-10 | 2019-08-06 | 乐清市华邦企业有限公司 | A kind of electric vehicle safe charging connector lug and electric vehicle safe charging mouth |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100428579C (en) * | 2004-05-08 | 2008-10-22 | 张宁 | Universal rotary resilience type safety power socket |
-
1996
- 1996-11-06 CN CN 96120295 patent/CN1094667C/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051718B (en) * | 2006-04-03 | 2011-04-20 | 张宁 | Novel electric connector for electric tool and device |
| CN102655283A (en) * | 2011-03-03 | 2012-09-05 | 张宁 | Earthed telescopic pressing-type civil electrical connecting device as well as plug and socket thereof |
| CN102655281A (en) * | 2011-03-03 | 2012-09-05 | 张宁 | Earthed telescopic meshed-type civil electrical connecting device as well as plug and socket thereof |
| CN102683957A (en) * | 2011-03-10 | 2012-09-19 | 张宁 | Telescopic welding cable coupling device |
| CN108495675A (en) * | 2015-11-27 | 2018-09-04 | 赛诺菲-安万特德国有限公司 | medicament injection apparatus |
| US10918804B2 (en) | 2015-11-27 | 2021-02-16 | Sanofi-Aventis Deutschland Gmbh | Medicament injection device with spring-assisted protective needle cap |
| CN106953121A (en) * | 2017-03-15 | 2017-07-14 | 深圳市信宇人科技有限公司 | Lithium battery heating system and its lithium battery baking line |
| CN110098542A (en) * | 2019-06-10 | 2019-08-06 | 乐清市华邦企业有限公司 | A kind of electric vehicle safe charging connector lug and electric vehicle safe charging mouth |
| CN110098542B (en) * | 2019-06-10 | 2023-12-12 | 乐清市华邦企业有限公司 | Electric motor car safety charge connector lug and electric motor car safety charge mouth |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1094667C (en) | 2002-11-20 |
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Effective date of registration: 20121023 Address after: 100081, No. 16, building 1, No. 12, Zhongguancun South Avenue, Beijing, Haidian District, 1911 Patentee after: Pui Pui Technology Co., Ltd. Address before: 100044 Beijing city Haidian District Xizhimen village on the No. 3 Beijing Jiaotong University Department of science and technology Patentee before: Zhang Ning |
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Address after: 100086 No. 6, South Main Street, Haidian District, Zhongguancun, No. 1002, Beijing Patentee after: Pui Pui Technology Co., Ltd. Address before: 100081, No. 16, building 1, No. 12, Zhongguancun South Avenue, Beijing, Haidian District, 1911 Patentee before: Pui Pui Technology Co., Ltd. |
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Addressee: Pui Pui Technology Co., Ltd. Document name: Notification of Approving Refund |
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Granted publication date: 20021120 |
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