EP2217388A1 - Siebsystem mit rohrförmigem sieb und verfahren zum betrieb eines siebsystems mit rohrförmigen sieb - Google Patents
Siebsystem mit rohrförmigem sieb und verfahren zum betrieb eines siebsystems mit rohrförmigen siebInfo
- Publication number
- EP2217388A1 EP2217388A1 EP08857543A EP08857543A EP2217388A1 EP 2217388 A1 EP2217388 A1 EP 2217388A1 EP 08857543 A EP08857543 A EP 08857543A EP 08857543 A EP08857543 A EP 08857543A EP 2217388 A1 EP2217388 A1 EP 2217388A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screen
- sieve
- tube
- tubular
- central axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012216 screening Methods 0.000 claims abstract description 45
- 238000002604 ultrasonography Methods 0.000 claims abstract description 25
- 239000004020 conductor Substances 0.000 claims description 50
- 230000005284 excitation Effects 0.000 claims description 27
- 239000004744 fabric Substances 0.000 claims description 24
- 238000007873 sieving Methods 0.000 claims description 5
- 230000000638 stimulation Effects 0.000 abstract 2
- 239000000463 material Substances 0.000 description 10
- 230000010355 oscillation Effects 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2230/00—Specific aspects relating to the whole B07B subclass
- B07B2230/04—The screen or the screened materials being subjected to ultrasonic vibration
Definitions
- the invention relates to a screening system according to the preamble of claim 1 and a method for operating a screening system according to the preamble of claim 13.
- screening machines For this purpose, generally known screening machines are used which use screen systems which differ in particular by the design and orientation of the screens used.
- Conventional vibratory and tumble screening machines use screens which have a screen fabric stretched in a frame and substantially planar, which is oriented substantially perpendicular to the desired direction of flow of the material. Screenings which do not fulfill the classification conditions imposed by the openings in the screen fabric remain behind in the screen; only screenings that fulfill the classification condition can leave the screen.
- centrifugal screening machines also known as eddy-current screening machines, are used.
- Such a screening machine is known for example from DE 30 19 113 C2.
- the screening system used comprises a tubular screen inside which the screenings are conveyed
- the tubular screen can consist of a tube with screen openings arranged directly in the wall of the tube but it may also be stretched by a screen mesh strapped to a screen frame defining at least the length and cross section of a tube so that the screen mesh forms at least part of the surface of the tubular screen, and more particularly not only in one plane
- embodiments are also conceivable in which both a tube with screen openings and an additional screen fabric surrounding this tube are provided.
- a tube is an elongate hollow body with an opening passing through it lengthwise and generally of cylindrical cross-section; accordingly, the adjective "tubular" describes an article having the shape of a tube as defined above.
- the sieving effect of the tubular sieve is achieved by causing a passage of the material to be sieved through the sieve openings and / or the sieve fabric which forms at least part of the tube wall.
- One possibility, which is used in particular at relatively low concentrations of the material to be screened, is inside the tubular screen to provide the material transporting fluid flow which is provided with such a swirling, that a material transport through the screen openings and / or the screen fabric comes.
- a so-called "racket system” ie a usually made of metal rotor linkage is provided, which is guided along the wall of the tubular screen and pushes the screenings through the screen openings and / or the screen fabric and optionally provided radial openings of the frame structure.
- the invention is based on the finding that excitation of a tubular screen by means of ultrasound leads to a significant increase in the throughput of screenings, when the amplitude of the ultrasonic excitation has both a component in the radial direction and a component in the axial direction of the tubular screen.
- a sieve system therefore has a tube which has at least one section (12) with sieve openings which are arranged directly in the wall of the tube and / or a sieve cloth which is placed on a sieve frame which at least has the length and the cross section of a sieve frame Defined tube is stretched, so that the mesh forms at least a portion of the wall of the tubular sieve, and at least one ultrasonic converter and at least one arranged between ultrasonic converter and the screen frame feed line conductor, wherein the tube or the screen frame by means of the ultrasonic converter and the lead scarf conductor an ultrasound excitation can be exposed and wherein the one or more lead conductors are configured such that the amplitude of the ultrasound excitation transmitted to the tube or screen frame comprises a component in a direction perpendicular to a central axis of the tubular screen and a component in a parallel direction having the central axis of the tubular screen.
- both components of the amplitude of the ultrasonic excitation at a single point of contact between the feed line conductor and pipe or screen frame are transmitted. This allows a particularly cost-effective design with only one ultrasonic converter and only one feed line sound conductor.
- the one feed line sound conductor has at least one curved area.
- the angle of curvature of the curved region is above 0 degrees and at most at 90 degrees, with a bend angle of 90 degrees being most suitable for most applications.
- a particularly robust and interference-resistant embodiment of the screen system is obtained by providing firm connections between the feed line conductor and the surface of the tube or surface of the screen frame. This can be done in particular by screwing or welding.
- the provision of a fixed connection between the feed line conductor and the ultrasonic converter has proven to be conducive to the robustness and interference resistance of the screening system.
- the screwing is suitable to produce such a solid connection.
- the presence of a component in a direction perpendicular to a central axis of the tubular screen and a component in a direction parallel to the central axis may also be present of the tubular screen can be achieved in that the direction of the amplitude of the ultrasound excitation, which is transmitted through different feed line conductors to the pipe or the screen frame, is different.
- This embodiment of the invention has proven particularly useful when a particularly targeted
- a pipe with sieve openings which are arranged directly in the wall of the tube and / or a screen fabric, which strained on a screen frame, which defines at least the length and the cross section of a tube is so that the screen fabric at least forms part of the surface of the tubular screen, the tube with the screen openings or the screen frame with an ultrasonic excitation with an amplitude are excited, which is a component in the direction perpendicular to a central axis of the tubular sieve and a component in a direction parallel to the central axis of the tubular screen.
- the process can be carried out with particularly low material expenditure if the amplitude which a component has in the direction perpendicular to a central axis of the tubular sieve and a component in a direction parallel to the central axis of the tubular sieve is produced by exactly one feed line sound conductor.
- a particularly well controllable size distribution of the two components of the oscillation amplitude is achieved if the amplitude, which is a component in the direction perpendicular to a A central axis of the tubular sieve and a component parallel to the central axis of the tubular sieve, is produced by more than one feeder acoustic conductor.
- FIG. 1 shows a sieve system with a tubular sieve according to a first embodiment of the invention
- FIG. 3 shows a sieve system with a tubular sieve according to a third embodiment of the invention
- FIG. 1 shows a screening system 1 with a tubular sieve 10, which in the illustrated embodiment has the form of a hollow sieve 10.
- Cylinder has.
- the tubular sieve 10 consists of a tube 11 having two annular end portions 111, 112, between which a cylindrical portion 113 is disposed.
- a cylindrical portion 113 is disposed in the cylindrical region 113.
- the tube 11 in the cylindrical portion 113 has a plurality of reinforcing ribs 12, which are drawn dark to distinguish them from the areas with screen openings.
- the use of two feed scarf ladders 14 and two ultrasonic converters 13 in this embodiment serves, in particular, to increase the vibrational energy transmitted to the tube 11. It has the central axis A-A.
- the tube 11 is connected via the feed line conductor 14 with the
- Ultrasonic converters 13 mechanically connected.
- the lead scarf ladder 14 are curved.
- an ultrasound transducer with an oscillation amplitude which is directed parallel to the central axis AA, fed into the feed line conductor 14 by the ultrasonic converter 13.
- the curvature of the feed line conductor 14 causes the oscillation amplitude receives an additional, perpendicular to the central axis AA component.
- the exact division of the components is determined by the geometric configuration of the feed line conductors 14, in particular by their curvature.
- the ultrasonic vibration is transmitted to the tube 11. The vibration caused thereby spreads via the pipe 11.
- the longitudinal component of the amplitude of the ultrasound excitation particularly promotes a propagation of the ultrasound over the entire length of the tubular sieve, while the transversal component particularly increases the efficiency of the sieving process at any given location of the tube 11.
- FIG. 2 shows a screening system 2 with a tubular sieve 10, which in the illustrated embodiment has the shape of a hollow cylinder.
- the tubular sieve 10 consists of a tube 11 which has two annular end portions 111, 112, between which a cylindrical region 113 is arranged.
- a cylindrical region 113 In the cylindrical region 113 are a plurality of bright areas 114, in which the tube
- the tube 11 in the cylindrical region 113 has numerous small screen openings, which are not drawn individually because of their small size for reasons of clarity.
- the tube 11 in the cylindrical region 113 has a plurality of reinforcing ribs
- the sieve system has the central axis AA.
- the tubular sieve is surrounded by a housing 15, through which the feed line conductors 14 are guided.
- the ultrasonic converter 13 are outside the housing and thus outside the area in which a contact with screenings would be possible arranged.
- the tube 11 is mechanically connected via the feed line conductors 14 with the ultrasonic converters 13.
- the feed line conductors 24 are designed in FIG. 2 with two regions of curvature.
- an ultrasound vibration with an oscillation amplitude which is directed parallel to the central axis A - A, is fed into the supply line sound conductor 24 by the ultrasound converters 13.
- the curvature of the feed line conductor 24 causes vibration amplitude receives an additional, perpendicular to the central axis A-A component.
- the exact division of the components is determined by the geometric configuration of the feed line conductors 24, in particular by their curvature.
- the ultrasonic vibration is transmitted to the tube 11.
- the vibration of the tube 11 caused thereby spreads across the tube 11.
- the longitudinal component of the amplitude of the ultrasound excitation in particular promotes a propagation of the ultrasound over the entire length of the tubular sieve, while The transverse component particularly increases the efficiency of the screening process.
- FIG. 3 shows a screening system 3 with a tubular sieve 30.
- the sieve 30 consists of a sieve cloth 32 and a sieve frame 31.
- the sieve frame consists of four annular sections 311, 312, 313, 314 which define the cross section of a tube or hollow cylinder , which are connected to each other via two connecting strips 316, 317, which likewise belong to the frame, by means of which the length of the tube is predetermined.
- the screen cloth 32 is stretched on the screen frame such that the screen cloth 32 forms at least part of the surface of the tubular screen 30. In particular, the screen cloth 32 is not arranged in one plane only.
- FIG. 3 shows two ultrasound converters 13 and two feed sound conductors 34, which each have two regions of curvature in FIG.
- the feed line conductors are connected to the screen frame 31 at contact points 315.
- an ultrasound vibration with an oscillation amplitude which is directed parallel to the central axis AA of the tubular screen 30, is fed into the supply sound conductors 34 by the ultrasonic converters 13.
- the curvature of the feed line conductors 34 results in the oscillation amplitude being given an additional component perpendicular to the central axis AA.
- the ultrasonic vibration is transmitted to the screen frame 31.
Landscapes
- Combined Means For Separation Of Solids (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Paper (AREA)
- Threshing Machine Elements (AREA)
- Photoreceptors In Electrophotography (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08857543A EP2217388B1 (de) | 2007-12-05 | 2008-11-25 | Siebsystem mit rohrförmigem sieb und verfahren zum betrieb eines siebsystems mit rohrförmigem sieb |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07023546A EP2067534A1 (de) | 2007-12-05 | 2007-12-05 | Siebsystem mit rohrförmigem Sieb und Verfahren zum Betrieb eines Siebsystems mit rohrförmigem Sieb |
EP08857543A EP2217388B1 (de) | 2007-12-05 | 2008-11-25 | Siebsystem mit rohrförmigem sieb und verfahren zum betrieb eines siebsystems mit rohrförmigem sieb |
PCT/EP2008/009972 WO2009071221A1 (de) | 2007-12-05 | 2008-11-25 | Siebsystem mit rohrförmigem sieb und verfahren zum betrieb eines siebsystems mit rohrförmigen sieb |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2217388A1 true EP2217388A1 (de) | 2010-08-18 |
EP2217388B1 EP2217388B1 (de) | 2011-10-19 |
Family
ID=39315595
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07023546A Withdrawn EP2067534A1 (de) | 2007-12-05 | 2007-12-05 | Siebsystem mit rohrförmigem Sieb und Verfahren zum Betrieb eines Siebsystems mit rohrförmigem Sieb |
EP08857543A Active EP2217388B1 (de) | 2007-12-05 | 2008-11-25 | Siebsystem mit rohrförmigem sieb und verfahren zum betrieb eines siebsystems mit rohrförmigem sieb |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07023546A Withdrawn EP2067534A1 (de) | 2007-12-05 | 2007-12-05 | Siebsystem mit rohrförmigem Sieb und Verfahren zum Betrieb eines Siebsystems mit rohrförmigem Sieb |
Country Status (12)
Country | Link |
---|---|
US (1) | US8453845B2 (de) |
EP (2) | EP2067534A1 (de) |
JP (1) | JP5582536B2 (de) |
KR (1) | KR101393148B1 (de) |
CN (1) | CN101925415B (de) |
AT (1) | ATE529196T1 (de) |
AU (1) | AU2008333606B2 (de) |
CA (1) | CA2708019C (de) |
DE (1) | DE202008017901U1 (de) |
DK (1) | DK2217388T3 (de) |
ES (1) | ES2376029T3 (de) |
WO (1) | WO2009071221A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110918451A (zh) * | 2019-12-17 | 2020-03-27 | 河南联合精密材料股份有限公司 | 一种带自动冲洗的去除异形颗粒的超声波振动过筛机 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2067534A1 (de) * | 2007-12-05 | 2009-06-10 | Artech Systems AG | Siebsystem mit rohrförmigem Sieb und Verfahren zum Betrieb eines Siebsystems mit rohrförmigem Sieb |
DE202012101287U1 (de) | 2012-04-11 | 2012-05-08 | Stefan Beidatsch | Siebsystem |
DE102012104577A1 (de) | 2012-05-29 | 2013-12-05 | assonic Mechatronics GmbH | Zylindersieb für eine Siebmaschine |
DE202012011921U1 (de) | 2012-12-13 | 2014-03-17 | Haver & Boecker Ohg | Siebeinrichtung |
NL2014210B1 (nl) * | 2015-01-29 | 2017-01-27 | Oijense Bovendijk B V | Zeefinrichting en werkwijze voor het scheiden van droog korrelvormig materiaal. |
WO2016141971A1 (de) * | 2015-03-10 | 2016-09-15 | Telsonic Holding Ag | Siebsystem, wirbelstromsiebmaschine und verwendung eines siebsystems oder einer wirbelstromsiebmaschine |
WO2016142454A2 (de) * | 2015-03-10 | 2016-09-15 | Telsonic Holding Ag | Siebsystem, wirbelstromsiebmaschine und verwendung eines siebsystems oder einer wirbelstromsiebmaschine |
CN112827790A (zh) * | 2021-02-03 | 2021-05-25 | 济南聚永丰设备工程有限公司 | 一种可调振幅、倾角的回转分级筛 |
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US3352238A (en) * | 1965-10-12 | 1967-11-14 | Universal Match Corp | Atomizer and method for disseminating toxicants |
BR7903275A (pt) * | 1979-05-25 | 1979-08-07 | K Guth | Repassadora centrifuga para controle de qualidade em processamento de cereais e outros granulados |
CN87205861U (zh) * | 1987-03-28 | 1987-11-04 | 华东工学院 | 管状单元式分子筛吸附制冷装置 |
JPH01132276U (de) * | 1988-03-02 | 1989-09-07 | ||
ATE163274T1 (de) * | 1993-05-26 | 1998-03-15 | Telsonic Ag | Vorrichtung und verfahren zum sieben, klassieren, sichten, filtern oder sortieren von stoffen |
DE4418175C5 (de) | 1993-05-26 | 2006-02-16 | Telsonic Ag | Vorrichtung und Verfahren zum Sieben, Klassieren, Sichten, Filtern oder Sortieren von Stoffen |
US5595306A (en) * | 1995-05-22 | 1997-01-21 | Emerson Electric Co. | Screening system |
JPH10244224A (ja) * | 1997-03-06 | 1998-09-14 | Taabo Kogyo Kk | 円筒スクリーン分級機 |
DE19811266C1 (de) * | 1998-03-11 | 1999-08-05 | Hielscher Gmbh | Verfahren zum Anregen eines Siebrahmens mit Ultraschall |
WO2000058031A2 (en) * | 1999-03-28 | 2000-10-05 | Vibtec Engineering Ltd. | A vibratory separator and a method for sorting solids having a multifrequency vibratory systems |
JP2002011409A (ja) * | 2000-06-30 | 2002-01-15 | Honda Electronic Co Ltd | 超音波フルイ装置 |
US6536602B2 (en) * | 2001-01-25 | 2003-03-25 | Walter August Ruescher | Food waster separator |
JP2003071358A (ja) * | 2001-09-05 | 2003-03-11 | Mitsubishi Materials Corp | 塗布装置および塗布装置の製造方法 |
GB2395923A (en) * | 2002-12-02 | 2004-06-09 | Russel Finex | Sieving apparatus |
US7763410B2 (en) * | 2003-11-18 | 2010-07-27 | Ricoh Company, Ltd. | Electrophotographic developing carrier, associated apparatus and methodology of classification and application |
JP4521599B2 (ja) * | 2004-11-08 | 2010-08-11 | 本多電子株式会社 | ふるい装置 |
JP4729385B2 (ja) * | 2005-11-08 | 2011-07-20 | 株式会社村上精機工作所 | 振動ふるい装置 |
WO2008017494A2 (de) * | 2006-08-10 | 2008-02-14 | Artech Systems Ag | Verfahren und vorrichtung zur ultraschallanregung von strukturen beliebiger geometrie zum zweck der verringerung von reibung |
JP4389003B2 (ja) * | 2006-10-31 | 2009-12-24 | 本多電子株式会社 | ふるい装置 |
JP2008223151A (ja) * | 2007-03-08 | 2008-09-25 | Aikawa Iron Works Co Ltd | 製紙用スクリーン装置 |
EP2067534A1 (de) * | 2007-12-05 | 2009-06-10 | Artech Systems AG | Siebsystem mit rohrförmigem Sieb und Verfahren zum Betrieb eines Siebsystems mit rohrförmigem Sieb |
-
2007
- 2007-12-05 EP EP07023546A patent/EP2067534A1/de not_active Withdrawn
-
2008
- 2008-11-25 CA CA2708019A patent/CA2708019C/en active Active
- 2008-11-25 AT AT08857543T patent/ATE529196T1/de active
- 2008-11-25 DK DK08857543.6T patent/DK2217388T3/da active
- 2008-11-25 WO PCT/EP2008/009972 patent/WO2009071221A1/de active Application Filing
- 2008-11-25 KR KR1020107014024A patent/KR101393148B1/ko active IP Right Grant
- 2008-11-25 AU AU2008333606A patent/AU2008333606B2/en not_active Ceased
- 2008-11-25 DE DE202008017901U patent/DE202008017901U1/de not_active Expired - Lifetime
- 2008-11-25 EP EP08857543A patent/EP2217388B1/de active Active
- 2008-11-25 ES ES08857543T patent/ES2376029T3/es active Active
- 2008-11-25 US US12/746,412 patent/US8453845B2/en active Active
- 2008-11-25 JP JP2010536356A patent/JP5582536B2/ja active Active
- 2008-11-25 CN CN2008801252835A patent/CN101925415B/zh active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2009071221A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110918451A (zh) * | 2019-12-17 | 2020-03-27 | 河南联合精密材料股份有限公司 | 一种带自动冲洗的去除异形颗粒的超声波振动过筛机 |
Also Published As
Publication number | Publication date |
---|---|
DE202008017901U1 (de) | 2010-10-14 |
KR20100106991A (ko) | 2010-10-04 |
AU2008333606B2 (en) | 2013-05-02 |
US20100258482A1 (en) | 2010-10-14 |
CN101925415A (zh) | 2010-12-22 |
AU2008333606A1 (en) | 2009-06-11 |
CA2708019A1 (en) | 2009-06-11 |
EP2067534A1 (de) | 2009-06-10 |
JP2011505245A (ja) | 2011-02-24 |
KR101393148B1 (ko) | 2014-05-08 |
CN101925415B (zh) | 2013-01-23 |
CA2708019C (en) | 2014-07-29 |
ATE529196T1 (de) | 2011-11-15 |
US8453845B2 (en) | 2013-06-04 |
WO2009071221A1 (de) | 2009-06-11 |
JP5582536B2 (ja) | 2014-09-03 |
DK2217388T3 (da) | 2012-01-23 |
EP2217388B1 (de) | 2011-10-19 |
ES2376029T3 (es) | 2012-03-08 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20100602 |
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