TREA

Independent date indicators activated by hand or by clockwork

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  • CPC
  • G04B19/2571
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Parent Industries

GPHYSICS G04Horology G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS G04B19/00Indicating the time by visual means

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G04B19/2571Independent date indicators activated by hand or by clockwork
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Patents Grantslast 30 patents

  • Information Patent Grant

    2257947
    • Patent number 2,257,947
    • Issue date Oct 7, 1941
    • G04 - HOROLOGY
  • Information Patent Grant

    1903430
    • Patent number 1,903,430
    • Issue date Apr 4, 1933
    • G04 - HOROLOGY
  • Information Patent Grant

    1866071
    • Patent number 1,866,071
    • Issue date Jul 5, 1932
    • G04 - HOROLOGY
  • Information Patent Grant

    1622913
    • Patent number 1,622,913
    • Issue date Mar 29, 1927
    • G04 - HOROLOGY
  • Information Patent Grant

    230134
    • Patent number 230,134
    • Issue date Jul 20, 1880
    • G04 - HOROLOGY
  • Information Patent Grant

    93088
    • Patent number 93,088
    • Issue date Jul 27, 1869
    • G04 - HOROLOGY