FR957883A - - Google Patents
Info
- Publication number
- FR957883A FR957883A FR957883DA FR957883A FR 957883 A FR957883 A FR 957883A FR 957883D A FR957883D A FR 957883DA FR 957883 A FR957883 A FR 957883A
- Authority
- FR
- France
- 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
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH857072X | 1946-07-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR957883A true FR957883A (da) | 1950-02-28 |
Family
ID=4542774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR957883D Expired FR957883A (da) | 1946-07-16 |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH251545A (da) |
| DE (1) | DE857072C (da) |
| FR (1) | FR957883A (da) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1266818B (de) * | 1966-03-26 | 1968-04-25 | Standard Elektrik Lorenz Ag | Verfahren und Schaltungsanordnung fuer Fernsprechvermittlungsanlagen zum Anklopfen von Anrufen |
-
0
- FR FR957883D patent/FR957883A/fr not_active Expired
-
1946
- 1946-07-16 CH CH251545D patent/CH251545A/de unknown
-
1950
- 1950-03-01 DE DEA929A patent/DE857072C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH251545A (de) | 1947-10-31 |
| DE857072C (de) | 1952-11-27 |