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by mechanically unlocking an electro-mechanical vibrator

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  • G04C21/18
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Parent Industries

GPHYSICS G04Horology G04CELECTROMECHANICAL CLOCKS OR WATCHES G04C21/00Producing acoustic time signals by electrical means

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G04C21/18by mechanically unlocking an electro-mechanical vibrator
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Patents Grantslast 30 patents

  • Information Patent Grant

    Remote controlled awakening device
    • Patent number 7,391,330
    • Issue date Jun 24, 2008
    • Angela Brown
    • G04 - HOROLOGY
  • Information Patent Grant

    Tactile reminder device
    • Patent number 7,085,197
    • Issue date Aug 1, 2006
    • Jacqueline Victoria Pehrson
    • G04 - HOROLOGY
  • Information Patent Grant

    Arrangement for and method of waking a sleeper
    • Patent number 5,144,600
    • Issue date Sep 1, 1992
    • Peter S. C. Cheng
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Battery operated panic alarm wrist watch
    • Patent number 4,591,836
    • Issue date May 27, 1986
    • Nathan Feigenblatt
    • G08 - SIGNALLING
  • Information Patent Grant

    Alarm clock construction
    • Patent number 4,213,291
    • Issue date Jul 22, 1980
    • Robertshaw Controls Company
    • Robert L. Wooding
    • G04 - HOROLOGY
  • Information Patent Grant

    Audible alarm for a synchronous motor
    • Patent number 3,961,327
    • Issue date Jun 1, 1976
    • P. R. Mallory & Co., Inc.
    • Ernest F. Kloenne
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Digital clock
    • Patent number 3,953,965
    • Issue date May 4, 1976
    • Kabushiki Kaisha Tamura Denki Seisakusho
    • Kanji Tobeta
    • G04 - HOROLOGY
  • Information Patent Grant

    Alarm clock timer
    • Patent number 3,930,360
    • Issue date Jan 6, 1976
    • General Electric Company
    • Robert L. Boyles
    • G04 - HOROLOGY
  • Information Patent Grant

    Alarm clock timer
    • Patent number 3,930,358
    • Issue date Jan 6, 1976
    • General Electric Company
    • Robert L. Boyles
    • G04 - HOROLOGY
  • Information Patent Grant

    3886723
    • Patent number 3,886,723
    • Issue date Jun 3, 1975
    • G04 - HOROLOGY
  • Information Patent Grant

    3882668
    • Patent number 3,882,668
    • Issue date May 13, 1975
    • G04 - HOROLOGY
  • Information Patent Grant

    3875737
    • Patent number 3,875,737
    • Issue date Apr 8, 1975
    • G04 - HOROLOGY
  • Information Patent Grant

    3807165
    • Patent number 3,807,165
    • Issue date Apr 30, 1974
    • G04 - HOROLOGY
  • Information Patent Grant

    3747331
    • Patent number 3,747,331
    • Issue date Jul 24, 1973
    • G08 - SIGNALLING
  • Information Patent Grant

    3745852
    • Patent number 3,745,852
    • Issue date Jul 17, 1973
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    3715883
    • Patent number 3,715,883
    • Issue date Feb 13, 1973
    • G04 - HOROLOGY
  • Information Patent Grant

    3708973
    • Patent number 3,708,973
    • Issue date Jan 9, 1973
    • G04 - HOROLOGY
  • Information Patent Grant

    3699282
    • Patent number 3,699,282
    • Issue date Oct 17, 1972
    • G04 - HOROLOGY
  • Information Patent Grant

    3636699
    • Patent number 3,636,699
    • Issue date Jan 25, 1972
    • G04 - HOROLOGY
  • Information Patent Grant

    3609956
    • Patent number 3,609,956
    • Issue date Oct 5, 1971
    • G04 - HOROLOGY
  • Information Patent Grant

    3597918
    • Patent number 3,597,918
    • Issue date Aug 10, 1971
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    3564836
    • Patent number 3,564,836
    • Issue date Feb 23, 1971
    • G04 - HOROLOGY
  • Information Patent Grant

    3559396
    • Patent number 3,559,396
    • Issue date Feb 2, 1971
    • G04 - HOROLOGY
  • Information Patent Grant

    3531928
    • Patent number 3,531,928
    • Issue date Oct 6, 1970
    • G04 - HOROLOGY
  • Information Patent Grant

    3524314
    • Patent number 3,524,314
    • Issue date Aug 18, 1970
    • G04 - HOROLOGY
  • Information Patent Grant

    3517499
    • Patent number 3,517,499
    • Issue date Jun 30, 1970
    • G04 - HOROLOGY
  • Information Patent Grant

    3498048
    • Patent number 3,498,048
    • Issue date Mar 3, 1970
    • G04 - HOROLOGY
  • Information Patent Grant

    3498046
    • Patent number 3,498,046
    • Issue date Mar 3, 1970
    • G04 - HOROLOGY
  • Information Patent Grant

    3495396
    • Patent number 3,495,396
    • Issue date Feb 17, 1970
    • G04 - HOROLOGY
  • Information Patent Grant

    3475899
    • Patent number 3,475,899
    • Issue date Nov 4, 1969
    • G04 - HOROLOGY

Patents Applicationslast 30 patents