FR708444A - Réveil à courant alternatif - Google Patents

Réveil à courant alternatif

Info

Publication number
FR708444A
FR708444A FR708444DA FR708444A FR 708444 A FR708444 A FR 708444A FR 708444D A FR708444D A FR 708444DA FR 708444 A FR708444 A FR 708444A
Authority
FR
France
Prior art keywords
alarm clock
alarm
clock
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
English (en)
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.)
Elektrisk Bureau AS
Original Assignee
Elektrisk Bureau AS
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 Elektrisk Bureau AS filed Critical Elektrisk Bureau AS
Application granted granted Critical
Publication of FR708444A publication Critical patent/FR708444A/fr
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
    • G04C21/18—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by mechanically unlocking an electromechanical vibrator, e.g. actuated by the leakage flux of the electric driving means
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K1/00—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs
    • G10K1/06—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube
    • G10K1/062—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube electrically operated

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR708444D 1929-12-31 1930-12-27 Réveil à courant alternatif Expired FR708444A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO708444X 1929-12-31

Publications (1)

Publication Number Publication Date
FR708444A true FR708444A (fr) 1931-07-23

Family

ID=19906747

Family Applications (1)

Application Number Title Priority Date Filing Date
FR708444D Expired FR708444A (fr) 1929-12-31 1930-12-27 Réveil à courant alternatif

Country Status (1)

Country Link
FR (1) FR708444A (fr)

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