FR630110A - Improvements to telephone systems - Google Patents
Improvements to telephone systemsInfo
- Publication number
- FR630110A FR630110A FR630110DA FR630110A FR 630110 A FR630110 A FR 630110A FR 630110D A FR630110D A FR 630110DA FR 630110 A FR630110 A FR 630110A
- Authority
- FR
- France
- Prior art keywords
- telephone systems
- telephone
- systems
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Exchange Systems With Centralized Control (AREA)
- Structure Of Telephone Exchanges (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8307/26A GB273015A (en) | 1926-03-26 | 1926-03-26 | Improvements in or relating to telephone systems |
Publications (1)
Publication Number | Publication Date |
---|---|
FR630110A true FR630110A (en) | 1927-11-23 |
Family
ID=9850006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR630110D Expired FR630110A (en) | 1926-03-26 | 1927-03-03 | Improvements to telephone systems |
Country Status (3)
Country | Link |
---|---|
US (1) | US1805778A (en) |
FR (1) | FR630110A (en) |
GB (1) | GB273015A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB580010A (en) * | 1944-02-16 | 1946-08-23 | Automatic Telephone & Elect | Improvements in or relating to telephone systems and automatic switches for use therein |
US2691066A (en) * | 1953-09-17 | 1954-10-05 | Stromberg Carlson Co | Automatic telephone system |
US3009020A (en) * | 1955-03-14 | 1961-11-14 | William J Camp | Digit absorbing converter for telephone switchboards |
-
1926
- 1926-03-26 GB GB8307/26A patent/GB273015A/en not_active Expired
-
1927
- 1927-02-26 US US171119A patent/US1805778A/en not_active Expired - Lifetime
- 1927-03-03 FR FR630110D patent/FR630110A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB273015A (en) | 1927-06-27 |
US1805778A (en) | 1931-05-19 |
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