FR727511A - Triggering device for alarm bells or others - Google Patents

Triggering device for alarm bells or others

Info

Publication number
FR727511A
FR727511A FR727511DA FR727511A FR 727511 A FR727511 A FR 727511A FR 727511D A FR727511D A FR 727511DA FR 727511 A FR727511 A FR 727511A
Authority
FR
France
Prior art keywords
triggering device
alarm bells
bells
alarm
triggering
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
Fernand Perard
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 FR727511A publication Critical patent/FR727511A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B23/00—Arrangements producing acoustic signals at preselected times
    • G04B23/02—Alarm clocks
    • G04B23/025—Signal triggering

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
FR727511D 1931-11-05 1931-11-05 Triggering device for alarm bells or others Expired FR727511A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR727511T 1931-11-05

Publications (1)

Publication Number Publication Date
FR727511A true FR727511A (en) 1932-06-20

Family

ID=9111318

Family Applications (1)

Application Number Title Priority Date Filing Date
FR727511D Expired FR727511A (en) 1931-11-05 1931-11-05 Triggering device for alarm bells or others

Country Status (1)

Country Link
FR (1) FR727511A (en)

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