using a tube operating as a switching device

Industry

  • CPC
  • H03K4/28
This industry / category may be too specific. Please go to a parent level for more data

Patents Grantslast 30 patents

  • Information Patent Grant

    3654510

    • Patent number 3,654,510
    • Issue date Apr 4, 1972
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3450937

    • Patent number 3,450,937
    • Issue date Jun 17, 1969
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3405313

    • Patent number 3,405,313
    • Issue date Oct 8, 1968
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3319113

    • Patent number 3,319,113
    • Issue date May 9, 1967
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3319111

    • Patent number 3,319,111
    • Issue date May 9, 1967
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3319112

    • Patent number 3,319,112
    • Issue date May 9, 1967
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3196309

    • Patent number 3,196,309
    • Issue date Jul 20, 1965
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3153174

    • Patent number 3,153,174
    • Issue date Oct 13, 1964
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3054020

    • Patent number 3,054,020
    • Issue date Sep 11, 1962
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2992359

    • Patent number 2,992,359
    • Issue date Jul 11, 1961
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2924746

    • Patent number 2,924,746
    • Issue date Feb 9, 1960
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2922059

    • Patent number 2,922,059
    • Issue date Jan 19, 1960
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2921230

    • Patent number 2,921,230
    • Issue date Jan 12, 1960
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2917660

    • Patent number 2,917,660
    • Issue date Dec 15, 1959
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2917661

    • Patent number 2,917,661
    • Issue date Dec 15, 1959
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2912618

    • Patent number 2,912,618
    • Issue date Nov 10, 1959
    • G01 - MEASURING TESTING
  • Information Patent Grant

    2905856

    • Patent number 2,905,856
    • Issue date Sep 22, 1959
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2903621

    • Patent number 2,903,621
    • Issue date Sep 8, 1959
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2900565

    • Patent number 2,900,565
    • Issue date Aug 18, 1959
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2899601

    • Patent number 2,899,601
    • Issue date Aug 11, 1959
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2896115

    • Patent number 2,896,115
    • Issue date Jul 21, 1959
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2886741

    • Patent number 2,886,741
    • Issue date May 12, 1959
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2872615

    • Patent number 2,872,615
    • Issue date Feb 3, 1959
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2871405

    • Patent number 2,871,405
    • Issue date Jan 27, 1959
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2870373

    • Patent number 2,870,373
    • Issue date Jan 20, 1959
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2869029

    • Patent number 2,869,029
    • Issue date Jan 13, 1959
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2869030

    • Patent number 2,869,030
    • Issue date Jan 13, 1959
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2838662

    • Patent number 2,838,662
    • Issue date Jun 10, 1958
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2837692

    • Patent number 2,837,692
    • Issue date Jun 3, 1958
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2835846

    • Patent number 2,835,846
    • Issue date May 20, 1958
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE