TREA

with tubes only

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Industry

  • CPC
  • H03F3/44
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Parent Industries

HELECTRICITY H03Electronic circuits H03FAMPLIFIERS H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements

Current Industry

H03F3/44with tubes only
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Multiple output transformers network for sound reproducing system
    • Patent number 5,530,770
    • Issue date Jun 25, 1996
    • Man H. Kim
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3582800
    • Patent number 3,582,800
    • Issue date Jun 1, 1971
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3378784
    • Patent number 3,378,784
    • Issue date Apr 16, 1968
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3213386
    • Patent number 3,213,386
    • Issue date Oct 19, 1965
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3184687
    • Patent number 3,184,687
    • Issue date May 18, 1965
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3124762
    • Patent number 3,124,762
    • Issue date Mar 10, 1964
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3123780
    • Patent number 3,123,780
    • Issue date Mar 3, 1964
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3105201
    • Patent number 3,105,201
    • Issue date Sep 24, 1963
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3092783
    • Patent number 3,092,783
    • Issue date Jun 4, 1963
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3086177
    • Patent number 3,086,177
    • Issue date Apr 16, 1963
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3038125
    • Patent number 3,038,125
    • Issue date Jun 5, 1962
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3024423
    • Patent number 3,024,423
    • Issue date Mar 6, 1962
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3011131
    • Patent number 3,011,131
    • Issue date Nov 28, 1961
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2993177
    • Patent number 2,993,177
    • Issue date Jul 18, 1961
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2950443
    • Patent number 2,950,443
    • Issue date Aug 23, 1960
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2942169
    • Patent number 2,942,169
    • Issue date Jun 21, 1960
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2939087
    • Patent number 2,939,087
    • Issue date May 31, 1960
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2936345
    • Patent number 2,936,345
    • Issue date May 10, 1960
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2931990
    • Patent number 2,931,990
    • Issue date Apr 5, 1960
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2929026
    • Patent number 2,929,026
    • Issue date Mar 15, 1960
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2922115
    • Patent number 2,922,115
    • Issue date Jan 19, 1960
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2920279
    • Patent number 2,920,279
    • Issue date Jan 5, 1960
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2912524
    • Patent number 2,912,524
    • Issue date Nov 10, 1959
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2895017
    • Patent number 2,895,017
    • Issue date Jul 14, 1959
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2895018
    • Patent number 2,895,018
    • Issue date Jul 14, 1959
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2890291
    • Patent number 2,890,291
    • Issue date Jun 9, 1959
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2889415
    • Patent number 2,889,415
    • Issue date Jun 2, 1959
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2884492
    • Patent number 2,884,492
    • Issue date Apr 28, 1959
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2881265
    • Patent number 2,881,265
    • Issue date Apr 7, 1959
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2845574
    • Patent number 2,845,574
    • Issue date Jul 29, 1958
    • H03 - BASIC ELECTRONIC CIRCUITRY