Gas detector

Patents Grantslast 30 patents

  • Information Patent Grant

    1953244

    • Patent number 1,953,244
    • Issue date Apr 3, 1934
    • G01 - MEASURING TESTING
  • Information Patent Grant

    1520086

    • Patent number 1,520,086
    • Issue date Dec 23, 1924
    • G01 - MEASURING TESTING
  • Information Patent Grant

    1467911

    • Patent number 1,467,911
    • Issue date Sep 11, 1923
    • G01 - MEASURING TESTING
  • Information Patent Grant

    1313323

    • Patent number 1,313,323
    • Issue date Aug 19, 1919
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    1224321

    • Patent number 1,224,321
    • Issue date May 1, 1917
    • G01 - MEASURING TESTING
  • Information Patent Grant

    1055227

    • Patent number 1,055,227
    • Issue date Mar 4, 1913
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    960823

    • Patent number 960,823
    • Issue date Jun 7, 1910
    • G01 - MEASURING TESTING
  • Information Patent Grant

    943015

    • Patent number 943,015
    • Issue date Dec 14, 1909
    • G01 - MEASURING TESTING
  • Information Patent Grant

    899068

    • Patent number 899,068
    • Issue date Sep 22, 1908
    • G01 - MEASURING TESTING
  • Information Patent Grant

    878456

    • Patent number 878,456
    • Issue date Feb 4, 1908
    • G01 - MEASURING TESTING
  • Information Patent Grant

    852895

    • Patent number 852,895
    • Issue date May 7, 1907
    • G01 - MEASURING TESTING
  • Information Patent Grant

    675755

    • Patent number 675,755
    • Issue date Jun 4, 1901
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    419924

    • Patent number 419,924
    • Issue date Jan 21, 1890
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    343392

    • Patent number 343,392
    • Issue date Jun 8, 1886
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    334890

    • Patent number 334,890
    • Issue date Jan 26, 1886
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    331119

    • Patent number 331,119
    • Issue date Nov 24, 1885
    • G01 - MEASURING TESTING
  • Information Patent Grant

    268908

    • Patent number 268,908
    • Issue date Dec 12, 1882
    • G01 - MEASURING TESTING

Patents Applicationslast 30 patents