TREA

Protection of filaments

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Industry

  • CPC
  • H03F1/544
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Parent Industries

HELECTRICITY H03Electronic circuits H03FAMPLIFIERS H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements

Current Industry

H03F1/544Protection of filaments
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus for counteracting the cathode current increase occurring...
    • Patent number 4,471,265
    • Issue date Sep 11, 1984
    • Telefonaktiebolaget L M Ericsson
    • Rolf W. Rasmusson
    • G01 - MEASURING TESTING
  • Information Patent Grant

    3573629
    • Patent number 3,573,629
    • Issue date Apr 6, 1971
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3398371
    • Patent number 3,398,371
    • Issue date Aug 20, 1968
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3350653
    • Patent number 3,350,653
    • Issue date Oct 31, 1967
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3349282
    • Patent number 3,349,282
    • Issue date Oct 24, 1967
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3299317
    • Patent number 3,299,317
    • Issue date Jan 17, 1967
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3292090
    • Patent number 3,292,090
    • Issue date Dec 13, 1966
    • G01 - MEASURING TESTING
  • Information Patent Grant

    3259793
    • Patent number 3,259,793
    • Issue date Jul 5, 1966
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3249791
    • Patent number 3,249,791
    • Issue date May 3, 1966
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3225302
    • Patent number 3,225,302
    • Issue date Dec 21, 1965
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3171084
    • Patent number 3,171,084
    • Issue date Feb 23, 1965
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3141994
    • Patent number 3,141,994
    • Issue date Jul 21, 1964
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3019368
    • Patent number 3,019,368
    • Issue date Jan 30, 1962
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2914637
    • Patent number 2,914,637
    • Issue date Nov 24, 1959
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2872573
    • Patent number 2,872,573
    • Issue date Feb 3, 1959
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2850676
    • Patent number 2,850,676
    • Issue date Sep 2, 1958
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2831151
    • Patent number 2,831,151
    • Issue date Apr 15, 1958
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2822507
    • Patent number 2,822,507
    • Issue date Feb 4, 1958
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    2768336
    • Patent number 2,768,336
    • Issue date Oct 23, 1956
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2748316
    • Patent number 2,748,316
    • Issue date May 29, 1956
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2727990
    • Patent number 2,727,990
    • Issue date Dec 20, 1955
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2679595
    • Patent number 2,679,595
    • Issue date May 25, 1954
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2599890
    • Patent number 2,599,890
    • Issue date Jun 10, 1952
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2554837
    • Patent number 2,554,837
    • Issue date May 29, 1951
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2507282
    • Patent number 2,507,282
    • Issue date May 9, 1950
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2488948
    • Patent number 2,488,948
    • Issue date Nov 22, 1949
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2307217
    • Patent number 2,307,217
    • Issue date Jan 5, 1943
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2055921
    • Patent number 2,055,921
    • Issue date Sep 29, 1936
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1809027
    • Patent number 1,809,027
    • Issue date Jun 9, 1931
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1775523
    • Patent number 1,775,523
    • Issue date Sep 9, 1930
    • H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents