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  • H03F1/20
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HELECTRICITY H03Electronic circuits H03FAMPLIFIERS H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements

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H03F1/20in discharge-tube amplifiers
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Patents Grantslast 30 patents

  • Information Patent Grant

    Vacuum tube amplification system capable of reducing residual noise...
    • Patent number 11,121,678
    • Issue date Sep 14, 2021
    • ECHOWELL ELECTRONIC CO., LTD.
    • Hsi-Hsien Chen
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Bias circuit
    • Patent number 10,673,388
    • Issue date Jun 2, 2020
    • NXP B.V.
    • Mark Pieter Van Der Heijden
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Method for RIAA correction of audio signal with use of transformer...
    • Patent number 7,493,180
    • Issue date Feb 17, 2009
    • Outsource Technologies, Inc.
    • Alexander Y. Sokolov
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Simple self-biased cascode amplifier circuit
    • Patent number 6,778,016
    • Issue date Aug 17, 2004
    • Koninklijke Philips Eletronics N.V.
    • Sifen Luo
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Wave propagation signal transmission device and applications of the...
    • Patent number 5,339,043
    • Issue date Aug 16, 1994
    • Prana Recherche et Development
    • Jacques Chahbazian
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Multisignal amplification
    • Patent number 4,423,386
    • Issue date Dec 27, 1983
    • The Marconi Company Limited
    • Roger E. J. Gerard
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Electronic amplification systems
    • Patent number 4,359,695
    • Issue date Nov 16, 1982
    • The Marconi Company Limited
    • Roger E. J. Gerard
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Amplifiers
    • Patent number 4,359,696
    • Issue date Nov 16, 1982
    • The Marconi Company Limited
    • Roger E. J. Gerard
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Wide band amplifiers
    • Patent number 4,337,439
    • Issue date Jun 29, 1982
    • The Marconi Company Limited
    • Boleslaw M. Sosin
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3909658
    • Patent number 3,909,658
    • Issue date Sep 30, 1975
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3808546
    • Patent number 3,808,546
    • Issue date Apr 30, 1974
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3582804
    • Patent number 3,582,804
    • Issue date Jun 1, 1971
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3571742
    • Patent number 3,571,742
    • Issue date Mar 23, 1971
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3497825
    • Patent number 3,497,825
    • Issue date Feb 24, 1970
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3451004
    • Patent number 3,451,004
    • Issue date Jun 17, 1969
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3449645
    • Patent number 3,449,645
    • Issue date Jun 10, 1969
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3323004
    • Patent number 3,323,004
    • Issue date May 30, 1967
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3309660
    • Patent number 3,309,660
    • Issue date Mar 14, 1967
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3248595
    • Patent number 3,248,595
    • Issue date Apr 26, 1966
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3247420
    • Patent number 3,247,420
    • Issue date Apr 19, 1966
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3222611
    • Patent number 3,222,611
    • Issue date Dec 7, 1965
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3218569
    • Patent number 3,218,569
    • Issue date Nov 16, 1965
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3217266
    • Patent number 3,217,266
    • Issue date Nov 9, 1965
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3210682
    • Patent number 3,210,682
    • Issue date Oct 5, 1965
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3201710
    • Patent number 3,201,710
    • Issue date Aug 17, 1965
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3155916
    • Patent number 3,155,916
    • Issue date Nov 3, 1964
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3129387
    • Patent number 3,129,387
    • Issue date Apr 14, 1964
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3127568
    • Patent number 3,127,568
    • Issue date Mar 31, 1964
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3072848
    • Patent number 3,072,848
    • Issue date Jan 8, 1963
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3064204
    • Patent number 3,064,204
    • Issue date Nov 13, 1962
    • H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents