TREA

using acoustic signalling

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Industry

  • CPC
  • G04F1/063
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Parent Industries

GPHYSICS G04Horology G04FTIME-INTERVAL MEASURING G04F1/00Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms

Current Industry

G04F1/063using acoustic signalling
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    2064759
    • Patent number 2,064,759
    • Issue date Dec 15, 1936
    • G04 - HOROLOGY
  • Information Patent Grant

    372090
    • Patent number 372,090
    • Issue date Oct 25, 1887
    • G04 - HOROLOGY

Patents Applicationslast 30 patents