FR805952A - Improvements in electric watch movements - Google Patents

Improvements in electric watch movements

Info

Publication number
FR805952A
FR805952A FR805952DA FR805952A FR 805952 A FR805952 A FR 805952A FR 805952D A FR805952D A FR 805952DA FR 805952 A FR805952 A FR 805952A
Authority
FR
France
Prior art keywords
watch movements
electric watch
electric
movements
watch
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
Frederic Alexandre Lanfranconi
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 FR805952A publication Critical patent/FR805952A/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)
FR805952D 1935-08-23 1935-08-23 Improvements in electric watch movements Expired FR805952A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR805952T 1935-08-23

Publications (1)

Publication Number Publication Date
FR805952A true FR805952A (en) 1936-12-04

Family

ID=9251604

Family Applications (1)

Application Number Title Priority Date Filing Date
FR805952D Expired FR805952A (en) 1935-08-23 1935-08-23 Improvements in electric watch movements

Country Status (1)

Country Link
FR (1) FR805952A (en)

Similar Documents

Publication Publication Date Title
FR787512A (en) Tool kit
FR800897A (en) Carburetor improvements
FR814725A (en) Improvements in radioreceptors
FR786656A (en) Improvements to watch movements
FR805953A (en) Improvements in electric watch movements
FR805952A (en) Improvements in electric watch movements
FR787605A (en) Improvements to clocks and electric clocks
FR786952A (en) Improvements in artillery equipment
FR806180A (en) Improvement in radio-receptors
FR766968A (en) Clockwork mechanism
FR811392A (en) Advanced training in auto-processors
FR808374A (en) Heterodynation montage
FR818408A (en) Improvements made to watch movements
FR783990A (en) Improvements upon awakening
FR813314A (en) Improvements to watch movements
FR794648A (en) Improvement in billboards
FR779287A (en) Improvements to watch movements
FR791189A (en) Improvement in electric salinometers
FR795600A (en) Improvement in electrical contacts
FR812071A (en) Improvements to savings clocks
FR773593A (en) Clock face
FR44960E (en) Clock face
FR796874A (en) Improvements to clocks and electric clocks
FR801219A (en) Watchmaking firms
CA10669S (en) Casket