FR720031A - Electric watch - Google Patents
Electric watchInfo
- Publication number
- FR720031A FR720031A FR720031DA FR720031A FR 720031 A FR720031 A FR 720031A FR 720031D A FR720031D A FR 720031DA FR 720031 A FR720031 A FR 720031A
- Authority
- FR
- France
- Prior art keywords
- electric watch
- watch
- electric
- 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
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
- G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance
- G04C3/061—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance the balance controlling contacts and mechanically driving the gear-train
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR720031T | 1931-07-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR720031A true FR720031A (en) | 1932-02-15 |
Family
ID=9091538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR720031D Expired FR720031A (en) | 1931-07-15 | 1931-07-15 | Electric watch |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR720031A (en) |
-
1931
- 1931-07-15 FR FR720031D patent/FR720031A/en not_active Expired
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