FR54653E - Bureaux téléphoniques interurbains n'utilisant pas de tricordes - Google Patents
Bureaux téléphoniques interurbains n'utilisant pas de tricordesInfo
- Publication number
- FR54653E FR54653E FR54653DA FR54653E FR 54653 E FR54653 E FR 54653E FR 54653D A FR54653D A FR 54653DA FR 54653 E FR54653 E FR 54653E
- Authority
- FR
- France
- Prior art keywords
- tricords
- long distance
- distance telephone
- telephone offices
- offices
- 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
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR872370X | 1942-11-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR54653E true FR54653E (fr) | 1950-07-27 |
Family
ID=9358866
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR960713D Expired FR960713A (fr) | 1942-11-13 | ||
| FR54653D Expired FR54653E (fr) | 1942-11-13 | 1943-09-22 | Bureaux téléphoniques interurbains n'utilisant pas de tricordes |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR960713D Expired FR960713A (fr) | 1942-11-13 |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE872370C (fr) |
| FR (2) | FR54653E (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1018928B (de) * | 1956-11-13 | 1957-11-07 | Merk Ag Telefonbau Friedrich | Schaltungsanordnung fuer handbediente Vermittlungseinrichtungen fuer Fernaemter des Fernsprechverkehrs |
-
0
- FR FR960713D patent/FR960713A/fr not_active Expired
-
1943
- 1943-09-22 FR FR54653D patent/FR54653E/fr not_active Expired
-
1950
- 1950-10-01 DE DEM6796A patent/DE872370C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE872370C (de) | 1953-03-30 |
| FR960713A (fr) | 1950-04-22 |
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