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  • H01K9/02
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Patents Grantslast 30 patents

  • Information Patent Grant

    Light bulb and method of use

    • Patent number 7,804,233
    • Issue date Sep 28, 2010
    • Shaam P. Sundhar
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Incandescent lamp with an improved filament implementation

    • Patent number 5,384,510
    • Issue date Jan 24, 1995
    • Bruce H. Arnold
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Two filament electric bulb traffic light

    • Patent number 3,968,395
    • Issue date Jul 6, 1976
    • Siemens Aktiengesellschaft
    • Anton Obermaier
    • G08 - SIGNALLING
  • Information Patent Grant

    3673534

    • Patent number 3,673,534
    • Issue date Jun 27, 1972
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    2448493

    • Patent number 2,448,493
    • Issue date Aug 31, 1948
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    2405789

    • Patent number 2,405,789
    • Issue date Aug 13, 1946
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    2241935

    • Patent number 2,241,935
    • Issue date May 13, 1941
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    2060637

    • Patent number 2,060,637
    • Issue date Nov 10, 1936
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    1742630

    • Patent number 1,742,630
    • Issue date Jan 7, 1930
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    1523362

    • Patent number 1,523,362
    • Issue date Jan 13, 1925
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    1468264

    • Patent number 1,468,264
    • Issue date Sep 18, 1923
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    1456568

    • Patent number 1,456,568
    • Issue date May 29, 1923
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    1437723

    • Patent number 1,437,723
    • Issue date Dec 5, 1922
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    1436807

    • Patent number 1,436,807
    • Issue date Nov 28, 1922
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    1433807

    • Patent number 1,433,807
    • Issue date Oct 31, 1922
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    1298179

    • Patent number 1,298,179
    • Issue date Mar 25, 1919
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    1259907

    • Patent number 1,259,907
    • Issue date Mar 19, 1918
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    511229

    • Patent number 511,229
    • Issue date Dec 19, 1893
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    339253

    • Patent number 339,253
    • Issue date Apr 6, 1886
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    273366

    • Patent number 273,366
    • Issue date Mar 6, 1883
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    261503

    • Patent number 261,503
    • Issue date Jul 18, 1882
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    259763

    • Patent number 259,763
    • Issue date Jun 20, 1882
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    166877

    • Patent number 166,877
    • Issue date Aug 17, 1875
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents