FR707375A - Improvements to electro-magnetic clocks - Google Patents

Improvements to electro-magnetic clocks

Info

Publication number
FR707375A
FR707375A FR707375DA FR707375A FR 707375 A FR707375 A FR 707375A FR 707375D A FR707375D A FR 707375DA FR 707375 A FR707375 A FR 707375A
Authority
FR
France
Prior art keywords
electro
clocks
magnetic
magnetic clocks
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
Arthur Quebatte
Ali Perret
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 FR707375A publication Critical patent/FR707375A/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
    • G04C3/02—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 pendulum
    • G04C3/027—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 pendulum using electromagnetic coupling between electric power source and pendulum

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
FR707375D 1930-12-11 1930-12-11 Improvements to electro-magnetic clocks Expired FR707375A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR707375T 1930-12-11

Publications (1)

Publication Number Publication Date
FR707375A true FR707375A (en) 1931-07-07

Family

ID=9068299

Family Applications (1)

Application Number Title Priority Date Filing Date
FR707375D Expired FR707375A (en) 1930-12-11 1930-12-11 Improvements to electro-magnetic clocks

Country Status (1)

Country Link
FR (1) FR707375A (en)

Similar Documents

Publication Publication Date Title
FR703997A (en) Improvements to mechanical razors
FR697795A (en) Improvements to wristwatches
FR721633A (en) Improvements to segments
FR688869A (en) Improvements to airplanes
FR707375A (en) Improvements to electro-magnetic clocks
FR712807A (en) Improvements to airplanes
FR716710A (en) Improvements to levels
FR705653A (en) Improvements made to gauges
FR716844A (en) Improvements to beams
FR726688A (en) Improvements to braziers
FR38830E (en) Improvements to mechanical backfillers
FR691623A (en) Wristwatch improvements
FR726581A (en) Wristwatch
FR697126A (en) Improvements to mechanical amplifiers
FR711443A (en) Improvements to talking machines
FR697451A (en) Improvements to boxes
FR714779A (en) Improvements to collectors
FR688007A (en) Improvements to grinders
FR39045E (en) Improvements to grinders
FR39417E (en) Improvements to grinders
FR709365A (en) Improvements relating to watches
FR728094A (en) Improvements to electrically maintained clocks
FR697001A (en) Improvements to jockstrap
FR709567A (en) Improvements to isolotors
FR726066A (en) Improvements to aerometers