FR531938A - Automatic calendar-alarm - Google Patents

Automatic calendar-alarm

Info

Publication number
FR531938A
FR531938A FR531938DA FR531938A FR 531938 A FR531938 A FR 531938A FR 531938D A FR531938D A FR 531938DA FR 531938 A FR531938 A FR 531938A
Authority
FR
France
Prior art keywords
alarm
automatic calendar
calendar
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
Charles-Pierre Delphy
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 FR531938A publication Critical patent/FR531938A/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
    • G04C21/30—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR531938D 1920-10-11 1920-10-11 Automatic calendar-alarm Expired FR531938A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR531938T 1920-10-11

Publications (1)

Publication Number Publication Date
FR531938A true FR531938A (en) 1922-01-23

Family

ID=8924236

Family Applications (1)

Application Number Title Priority Date Filing Date
FR531938D Expired FR531938A (en) 1920-10-11 1920-10-11 Automatic calendar-alarm

Country Status (1)

Country Link
FR (1) FR531938A (en)

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