FR677769A - Ringing device for alarm clocks - Google Patents

Ringing device for alarm clocks

Info

Publication number
FR677769A
FR677769A FR677769DA FR677769A FR 677769 A FR677769 A FR 677769A FR 677769D A FR677769D A FR 677769DA FR 677769 A FR677769 A FR 677769A
Authority
FR
France
Prior art keywords
alarm clocks
ringing device
ringing
clocks
alarm
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)
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.)
MANUF HORLOGERIE BETHUNE
Original Assignee
MANUF HORLOGERIE BETHUNE
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 MANUF HORLOGERIE BETHUNE filed Critical MANUF HORLOGERIE BETHUNE
Application granted granted Critical
Publication of FR677769A publication Critical patent/FR677769A/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
    • G04B23/026—Hammer driving; hammers; devices with several hammers or sounding bodies; vibrators

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
FR677769D 1929-07-03 1929-07-03 Ringing device for alarm clocks Expired FR677769A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR677769T 1929-07-03

Publications (1)

Publication Number Publication Date
FR677769A true FR677769A (en) 1930-03-14

Family

ID=9020657

Family Applications (1)

Application Number Title Priority Date Filing Date
FR677769D Expired FR677769A (en) 1929-07-03 1929-07-03 Ringing device for alarm clocks

Country Status (1)

Country Link
FR (1) FR677769A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696072A (en) * 1951-08-09 1954-12-07 Borg George W Corp Alarm clock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696072A (en) * 1951-08-09 1954-12-07 Borg George W Corp Alarm clock

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