TREA

by sighting means

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  • CPC
  • G01C17/12
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Parent Industries

GPHYSICS G01Measuring instruments G01CMEASURING DISTANCES, LEVELS OR BEARINGS SURVEYING NAVIGATION GYROSCOPIC INSTRUMENTS PHOTOGRAMMETRY OR VIDEOGRAMMETRY G01C17/00Compasses Devices for ascertaining true or magnetic north for navigation or surveying purposes

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G01C17/12by sighting means
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Patents Grantslast 30 patents

  • Information Patent Grant

    Wrist compass and transit
    • Patent number 4,158,260
    • Issue date Jun 19, 1979
    • Pollack; Benjamin D.
    • Richard T. Benger
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Magnetic bearing plotting and sighting device
    • Patent number 4,081,912
    • Issue date Apr 4, 1978
    • David F. Laney
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Bearing compass
    • Patent number 4,020,559
    • Issue date May 3, 1977
    • E. S. Ritchie & Sons, Inc.
    • Allen Butman Sherman
    • G01 - MEASURING TESTING
  • Information Patent Grant

    3919782
    • Patent number 3,919,782
    • Issue date Nov 18, 1975
    • G01 - MEASURING TESTING
  • Information Patent Grant

    3389632
    • Patent number 3,389,632
    • Issue date Jun 25, 1968
    • G01 - MEASURING TESTING
  • Information Patent Grant

    3290782
    • Patent number 3,290,782
    • Issue date Dec 13, 1966
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3088217
    • Patent number 3,088,217
    • Issue date May 7, 1963
    • G01 - MEASURING TESTING
  • Information Patent Grant

    2111829
    • Patent number 2,111,829
    • Issue date Mar 22, 1938
    • G01 - MEASURING TESTING
  • Information Patent Grant

    2080776
    • Patent number 2,080,776
    • Issue date May 18, 1937
    • G01 - MEASURING TESTING
  • Information Patent Grant

    1936846
    • Patent number 1,936,846
    • Issue date Nov 28, 1933
    • G01 - MEASURING TESTING
  • Information Patent Grant

    1857597
    • Patent number 1,857,597
    • Issue date May 10, 1932
    • G01 - MEASURING TESTING
  • Information Patent Grant

    1571697
    • Patent number 1,571,697
    • Issue date Feb 2, 1926
    • G01 - MEASURING TESTING
  • Information Patent Grant

    1399685
    • Patent number 1,399,685
    • Issue date Dec 6, 1921
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents