FR613143A - Automatic wake-up alarm - Google Patents

Automatic wake-up alarm

Info

Publication number
FR613143A
FR613143A FR613143DA FR613143A FR 613143 A FR613143 A FR 613143A FR 613143D A FR613143D A FR 613143DA FR 613143 A FR613143 A FR 613143A
Authority
FR
France
Prior art keywords
alarm
automatic wake
wake
automatic
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
Emile-Honore Marchand
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 FR613143A publication Critical patent/FR613143A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
    • G04C21/20—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm
    • G04C21/26—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm put into action by the vibrations caused by the operation of a mechanical alarm work

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR613143D 1925-07-18 1925-07-18 Automatic wake-up alarm Expired FR613143A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR613143T 1925-07-18

Publications (1)

Publication Number Publication Date
FR613143A true FR613143A (en) 1926-11-09

Family

ID=8979330

Family Applications (1)

Application Number Title Priority Date Filing Date
FR613143D Expired FR613143A (en) 1925-07-18 1925-07-18 Automatic wake-up alarm

Country Status (1)

Country Link
FR (1) FR613143A (en)

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