GB725733A - Improvements in or relating to circuits for use in automatic telephone systems - Google Patents
Improvements in or relating to circuits for use in automatic telephone systemsInfo
- Publication number
- GB725733A GB725733A GB12133/53A GB1213353A GB725733A GB 725733 A GB725733 A GB 725733A GB 12133/53 A GB12133/53 A GB 12133/53A GB 1213353 A GB1213353 A GB 1213353A GB 725733 A GB725733 A GB 725733A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- circuits
- telephone systems
- automatic telephone
- marking circuit
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/02—Circular saw blades
- B23D61/023—Circular saw blades with inserted segments having more than one tooth
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
- H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
- H04Q3/525—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using tubes in the switching stages
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mechanical Engineering (AREA)
- Devices For Supply Of Signal Current (AREA)
- Telephonic Communication Services (AREA)
- Meter Arrangements (AREA)
Abstract
725,733. Automatic exchange systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 1, 1953 [May 5, 1952], No. 12133/53. Drawings to Specification. Class 40 (4). The system described is the same as that in Specification 733,577, wherein an intelligence connection is established over discharge tubes pertaining to the calling and called subscriber under the control of a marking circuit (TS), but the claims are directed to the action of an auxiliary tube (B3) on the marking circuit in response to the first dialled impulse.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL313271X | 1952-05-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB725733A true GB725733A (en) | 1955-03-09 |
Family
ID=19783709
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12132/53A Expired GB733577A (en) | 1952-05-05 | 1953-05-01 | Improvements in or relating to busy-tone circuits for use in automatic telephone exchange systems |
GB12133/53A Expired GB725733A (en) | 1952-05-05 | 1953-05-01 | Improvements in or relating to circuits for use in automatic telephone systems |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12132/53A Expired GB733577A (en) | 1952-05-05 | 1953-05-01 | Improvements in or relating to busy-tone circuits for use in automatic telephone exchange systems |
Country Status (7)
Country | Link |
---|---|
US (1) | US2739265A (en) |
BE (1) | BE519679A (en) |
CH (2) | CH313271A (en) |
DE (2) | DE923672C (en) |
FR (2) | FR1080760A (en) |
GB (2) | GB733577A (en) |
NL (4) | NL89685C (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2862149A (en) * | 1953-01-12 | 1958-11-25 | Automatie Telephone & Electric | Telecommunication systems |
US2872619A (en) * | 1954-02-04 | 1959-02-03 | Automatic Telephone & Elect | Counting circuits |
NL254193A (en) * | 1959-07-29 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2310105A (en) * | 1941-04-16 | 1943-02-02 | Gen Electric | Counter circuit |
US2549769A (en) * | 1943-08-31 | 1951-04-24 | Int Standard Electric Corp | Arrangement for counting electrical impulses |
-
0
- NL NL87343D patent/NL87343C/xx active
- NL NL84684D patent/NL84684C/xx active
- BE BE519679D patent/BE519679A/xx unknown
- NL NL7108482A patent/NL169331B/en unknown
- NL NL89685D patent/NL89685C/xx active
-
1953
- 1953-05-01 GB GB12132/53A patent/GB733577A/en not_active Expired
- 1953-05-01 GB GB12133/53A patent/GB725733A/en not_active Expired
- 1953-05-03 DE DEN7130A patent/DE923672C/en not_active Expired
- 1953-05-03 DE DEN7129A patent/DE923673C/en not_active Expired
- 1953-05-04 FR FR1080760D patent/FR1080760A/en not_active Expired
- 1953-05-04 CH CH313271D patent/CH313271A/en unknown
- 1953-05-04 FR FR1080761D patent/FR1080761A/en not_active Expired
- 1953-05-04 CH CH315217D patent/CH315217A/en unknown
- 1953-05-05 US US353112A patent/US2739265A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE923673C (en) | 1955-04-04 |
US2739265A (en) | 1956-03-20 |
NL84684C (en) | |
NL169331B (en) | |
CH315217A (en) | 1956-07-31 |
BE519679A (en) | |
CH313271A (en) | 1956-03-31 |
FR1080761A (en) | 1954-12-13 |
GB733577A (en) | 1955-07-13 |
FR1080760A (en) | 1954-12-13 |
NL87343C (en) | |
DE923672C (en) | 1955-03-07 |
NL89685C (en) |
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