FR544715A - Improvements made to electric clocks - Google Patents

Improvements made to electric clocks

Info

Publication number
FR544715A
FR544715A FR544715DA FR544715A FR 544715 A FR544715 A FR 544715A FR 544715D A FR544715D A FR 544715DA FR 544715 A FR544715 A FR 544715A
Authority
FR
France
Prior art keywords
improvements made
electric clocks
clocks
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
Pierre Cargill
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 FR544715A publication Critical patent/FR544715A/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
    • G04C3/033—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 torsion pendulums; using conical pendulums

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR544715D 1921-12-20 1921-12-20 Improvements made to electric clocks Expired FR544715A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR544715T 1921-12-20

Publications (1)

Publication Number Publication Date
FR544715A true FR544715A (en) 1922-09-27

Family

ID=8932467

Family Applications (1)

Application Number Title Priority Date Filing Date
FR544715D Expired FR544715A (en) 1921-12-20 1921-12-20 Improvements made to electric clocks

Country Status (1)

Country Link
FR (1) FR544715A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2990676A (en) * 1958-07-16 1961-07-04 Hamilton Watch Co Battery driven clock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2990676A (en) * 1958-07-16 1961-07-04 Hamilton Watch Co Battery driven clock

Similar Documents

Publication Publication Date Title
FR560298A (en) Improvements made to electrical switches
FR555572A (en) Improvements made to switches
FR544715A (en) Improvements made to electric clocks
FR547606A (en) Improvements to electrical switches
FR25330E (en) Improvements made to electrical switches
FR559341A (en) Improvements to seleno-radio-dosimeter
FR27158E (en) Improvements to radio-receivers
FR535868A (en) Improvements to insulators
FR551277A (en) Improvements made to electric accumulators
FR546597A (en) Improvements to electric oscillators
FR579414A (en) Improvements to electric clocks
FR541026A (en) Improvements to electrical switches
FR549394A (en) Improvements to electrical switches
FR554970A (en) Improvements to electrical switches
FR26722E (en) Improvements to electrical switches
FR27630E (en) Improvements made to electrical switches
FR544063A (en) Improvements made to electrical switches
FR559343A (en) Improvements to electrical controls
FR540775A (en) Improvements to electric oscillators
FR577194A (en) Improvements to electric clocks
FR541145A (en) Improvements to
FR25949E (en) Improvements to radio-receivers
FR27863E (en) Improvements to radio-receivers
FR535855A (en) Improvements to jointer-planers
FR539358A (en) Improvements to aeromotors