FR417221A - Improvements to electric clocks - Google Patents

Improvements to electric clocks

Info

Publication number
FR417221A
FR417221A FR417221DA FR417221A FR 417221 A FR417221 A FR 417221A FR 417221D A FR417221D A FR 417221DA FR 417221 A FR417221 A FR 417221A
Authority
FR
France
Prior art keywords
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
Frank Holden
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 by Individual filed Critical Individual
Application granted granted Critical
Publication of FR417221A publication Critical patent/FR417221A/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)
FR417221D 1910-06-17 1910-06-17 Improvements to electric clocks Expired FR417221A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR417221T 1910-06-17

Publications (1)

Publication Number Publication Date
FR417221A true FR417221A (en) 1910-11-09

Family

ID=1460646

Family Applications (1)

Application Number Title Priority Date Filing Date
FR417221D Expired FR417221A (en) 1910-06-17 1910-06-17 Improvements to electric clocks

Country Status (1)

Country Link
FR (1) FR417221A (en)

Similar Documents

Publication Publication Date Title
FR14663E (en) Improvements to electric clocks
FR417221A (en) Improvements to electric clocks
FR421023A (en) Improvements to clocks
FR426001A (en) Improvements to electric lamps
FR432848A (en) Improvements to electric warning clocks
FR417919A (en) Improvements to electrical machines
FR429383A (en) Improvements to crushers
FR415729A (en) Improvements to shearers
FR419980A (en) Improvements to cinematographs
FR419789A (en) Improvements to kinetoscopes
FR423186A (en) Improvements to taps-valves-mixers
FR415193A (en) Improvements to gasifiers
FR415224A (en) Improvements to bracelets
FR431363A (en) Improvements to barrettes
FR423806A (en) Improvements to razors
FR417563A (en) Improvements to electric alarms
FR449825A (en) Improvements to electric pendulum clocks
FR423970A (en) Improvements made to velocipeds
FR426981A (en) Improvements to electrical machines
FR423003A (en) Improvements to crushers
FR421041A (en) Improvements to turbines
FR463084A (en) Improvements to electrical switches
FR459479A (en) Improvements to electrical switches
FR459207A (en) Improvements to electrical switches
FR450086A (en) Improvements to electrical switches