FR1134739A - Improvements to telephone systems - Google Patents
Improvements to telephone systemsInfo
- Publication number
- FR1134739A FR1134739A FR1134739DA FR1134739A FR 1134739 A FR1134739 A FR 1134739A FR 1134739D A FR1134739D A FR 1134739DA FR 1134739 A FR1134739 A FR 1134739A
- 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
- H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Exchange Systems With Centralized Control (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL793254X | 1954-06-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1134739A true FR1134739A (en) | 1957-04-17 |
Family
ID=8714169
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1134739D Expired FR1134739A (en) | 1954-06-03 | 1955-06-03 | Improvements to telephone systems |
FR793254A Expired FR75636E (en) | 1954-06-03 | 1959-04-27 | Improvements to telephone systems |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR793254A Expired FR75636E (en) | 1954-06-03 | 1959-04-27 | Improvements to telephone systems |
Country Status (3)
Country | Link |
---|---|
BE (2) | BE538654A (en) |
DE (1) | DE1008362B (en) |
FR (2) | FR1134739A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2095184A1 (en) * | 1970-06-30 | 1972-02-11 | Cit Alcatel |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1512962C2 (en) * | 1967-06-29 | 1974-03-07 | Siemens Ag, 1000 Berlin U. 8000 Muenchen | Circuit arrangement for converting coded dialing codes into direct current dialing pulse series in telephone systems |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2531615A (en) * | 1948-10-29 | 1950-11-28 | Bell Telephone Labor Inc | Telephone system |
-
1955
- 1955-06-02 BE BE538654D patent/BE538654A/xx unknown
- 1955-06-03 DE DE1955I0010285 patent/DE1008362B/en active Pending
- 1955-06-03 FR FR1134739D patent/FR1134739A/en not_active Expired
-
1958
- 1958-04-28 BE BE567180D patent/BE567180A/xx unknown
-
1959
- 1959-04-27 FR FR793254A patent/FR75636E/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2095184A1 (en) * | 1970-06-30 | 1972-02-11 | Cit Alcatel |
Also Published As
Publication number | Publication date |
---|---|
BE538654A (en) | 1955-12-02 |
BE567180A (en) | 1958-10-28 |
FR75636E (en) | 1961-07-21 |
DE1008362B (en) | 1957-05-16 |
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