FR562274A - Improvements to telephone systems - Google Patents
Improvements to telephone systemsInfo
- Publication number
- FR562274A FR562274A FR562274DA FR562274A FR 562274 A FR562274 A FR 562274A FR 562274D A FR562274D A FR 562274DA FR 562274 A FR562274 A FR 562274A
- 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
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H63/00—Details of electrically-operated selector switches
- H01H63/16—Driving arrangements for multi-position wipers
- H01H63/24—Driving arrangements for multi-position wipers with continuous motion of wiper until a selected position is reached
- H01H63/28—Driving arrangements for multi-position wipers with continuous motion of wiper until a selected position is reached with an individual motor for each selector switch
- H01H63/30—Pneumatic motor for moving wiper to selected position
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR562274T | 1923-02-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR562274A true FR562274A (en) | 1923-11-08 |
Family
ID=8944184
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR562274D Expired FR562274A (en) | 1923-02-16 | 1923-02-16 | Improvements to telephone systems |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR562274A (en) |
-
1923
- 1923-02-16 FR FR562274D patent/FR562274A/en not_active Expired
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