TREA

by the hand(s) or handlike members closing the contacts

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Industry

  • CPC
  • G04C21/323
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Parent Industries

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

Current Industry

G04C21/323by the hand(s) or handlike members closing the contacts
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    2085617
    • Patent number 2,085,617
    • Issue date Jun 29, 1937
    • G04 - HOROLOGY
  • Information Patent Grant

    2062715
    • Patent number 2,062,715
    • Issue date Dec 1, 1936
    • G04 - HOROLOGY
  • Information Patent Grant

    1370059
    • Patent number 1,370,059
    • Issue date Mar 1, 1921
    • G04 - HOROLOGY

Patents Applicationslast 30 patents