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  • CPC
  • G04C23/36
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Parent Industries

GPHYSICS G04Horology G04CELECTROMECHANICAL CLOCKS OR WATCHES G04C23/00Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals

Current Industry

G04C23/36by external influences
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Lighting system having photosensing timing switch circuit
    • Patent number 4,851,738
    • Issue date Jul 25, 1989
    • Tai-Her Yang
    • F21 - LIGHTING
  • Information Patent Grant

    Lighting system having photosensing timing switch circuit
    • Patent number 4,645,980
    • Issue date Feb 24, 1987
    • Tai-Her Yang
    • F21 - LIGHTING
  • Information Patent Grant

    Snow alarm
    • Patent number 4,122,660
    • Issue date Oct 31, 1978
    • Richard J. Canavan
    • G04 - HOROLOGY
  • Information Patent Grant

    3673413
    • Patent number 3,673,413
    • Issue date Jun 27, 1972
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    3599048
    • Patent number 3,599,048
    • Issue date Aug 10, 1971
    • G04 - HOROLOGY
  • Information Patent Grant

    3555214
    • Patent number 3,555,214
    • Issue date Jan 12, 1971
    • G04 - HOROLOGY
  • Information Patent Grant

    3414860
    • Patent number 3,414,860
    • Issue date Dec 3, 1968
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    3410969
    • Patent number 3,410,969
    • Issue date Nov 12, 1968
    • G04 - HOROLOGY
  • Information Patent Grant

    3366801
    • Patent number 3,366,801
    • Issue date Jan 30, 1968
    • G04 - HOROLOGY
  • Information Patent Grant

    3350581
    • Patent number 3,350,581
    • Issue date Oct 31, 1967
    • G04 - HOROLOGY
  • Information Patent Grant

    3258552
    • Patent number 3,258,552
    • Issue date Jun 28, 1966
    • G04 - HOROLOGY
  • Information Patent Grant

    3244888
    • Patent number 3,244,888
    • Issue date Apr 5, 1966
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    3240960
    • Patent number 3,240,960
    • Issue date Mar 15, 1966
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    3231747
    • Patent number 3,231,747
    • Issue date Jan 25, 1966
    • G04 - HOROLOGY
  • Information Patent Grant

    3055994
    • Patent number 3,055,994
    • Issue date Sep 25, 1962
    • G04 - HOROLOGY
  • Information Patent Grant

    3043935
    • Patent number 3,043,935
    • Issue date Jul 10, 1962
    • G04 - HOROLOGY
  • Information Patent Grant

    2988608
    • Patent number 2,988,608
    • Issue date Jun 13, 1961
    • G04 - HOROLOGY
  • Information Patent Grant

    2979580
    • Patent number 2,979,580
    • Issue date Apr 11, 1961
    • G04 - HOROLOGY
  • Information Patent Grant

    2949017
    • Patent number 2,949,017
    • Issue date Aug 16, 1960
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    2902554
    • Patent number 2,902,554
    • Issue date Sep 1, 1959
    • G04 - HOROLOGY
  • Information Patent Grant

    2821434
    • Patent number 2,821,434
    • Issue date Jan 28, 1958
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    2709341
    • Patent number 2,709,341
    • Issue date May 31, 1955
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    2528766
    • Patent number 2,528,766
    • Issue date Nov 7, 1950
    • G04 - HOROLOGY