FR720031A - Electric watch - Google Patents

Electric watch

Info

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
Application number
Other languages
French (fr)
Inventor
Maurice-Philippe Favre-Bulle
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR720031A publication Critical patent/FR720031A/en
Expired legal-status Critical Current

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)
FR720031D 1931-07-15 1931-07-15 Electric watch Expired FR720031A (en)

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)

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