Means structurally associated with the tube or lamp for indicating defects or previous use

Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus for generating plasma

    • Patent number 9,627,167
    • Issue date Apr 18, 2017
    • Electronics and Telecommunications Research Institute
    • Han Young Yu
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Discharge lamp including an integral cathode fall indicator

    • Patent number 5,909,091
    • Issue date Jun 1, 1999
    • Rockwell International
    • David W. Conway
    • H01 - BASIC ELECTRIC ELEMENTS
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    Lamp with an oxygen detector

    • Patent number 5,128,106
    • Issue date Jul 7, 1992
    • GTE Products Corporation
    • Jeffrey P. Buschmann
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    3407123

    • Patent number 3,407,123
    • Issue date Oct 22, 1968
    • H01 - BASIC ELECTRIC ELEMENTS
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    2725525

    • Patent number 2,725,525
    • Issue date Nov 29, 1955
    • G01 - MEASURING TESTING
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    2707249

    • Patent number 2,707,249
    • Issue date Apr 26, 1955
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    2522969

    • Patent number 2,522,969
    • Issue date Sep 19, 1950
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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    2030781

    • Patent number 2,030,781
    • Issue date Feb 11, 1936
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    1933097

    • Patent number 1,933,097
    • Issue date Oct 31, 1933
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    1754180

    • Patent number 1,754,180
    • Issue date Apr 8, 1930
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    1716155

    • Patent number 1,716,155
    • Issue date Jun 4, 1929
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents