CH127133A - Telephone installation. - Google Patents
Telephone installation.Info
- Publication number
- CH127133A CH127133A CH127133DA CH127133A CH 127133 A CH127133 A CH 127133A CH 127133D A CH127133D A CH 127133DA CH 127133 A CH127133 A CH 127133A
- Authority
- CH
- Switzerland
- Prior art keywords
- telephone installation
- telephone
- installation
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/06—Current supply arrangements for telephone systems in which current supply sources at subordinate switching centres are charged from the main exchange
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH645952X | 1927-07-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH127133A true CH127133A (en) | 1928-08-16 |
Family
ID=4525759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH127133D CH127133A (en) | 1927-07-26 | 1927-07-26 | Telephone installation. |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH127133A (en) |
FR (1) | FR645952A (en) |
-
1927
- 1927-07-26 CH CH127133D patent/CH127133A/en unknown
- 1927-12-20 FR FR645952D patent/FR645952A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR645952A (en) | 1928-11-06 |
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