FR978603A - Improvements to telephone systems - Google Patents
Improvements to telephone systemsInfo
- Publication number
- FR978603A FR978603A FR978603DA FR978603A FR 978603 A FR978603 A FR 978603A FR 978603D A FR978603D A FR 978603DA FR 978603 A FR978603 A FR 978603A
- 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
- H04Q3/0016—Arrangements providing connection between exchanges
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR978603T | 1948-11-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR978603A true FR978603A (en) | 1951-04-16 |
Family
ID=9520630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR978603D Expired FR978603A (en) | 1948-11-23 | 1948-11-23 | Improvements to telephone systems |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR978603A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE937651C (en) * | 1952-08-31 | 1956-01-12 | Siemens Ag | Telecommunication, in particular telephone system with dialer operation |
-
1948
- 1948-11-23 FR FR978603D patent/FR978603A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE937651C (en) * | 1952-08-31 | 1956-01-12 | Siemens Ag | Telecommunication, in particular telephone system with dialer operation |
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