TREA

with tubes only

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Industry

  • CPC
  • H03F3/64
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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

H03F3/64with tubes only
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    3502823
    • Patent number 3,502,823
    • Issue date Mar 24, 1970
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3112376
    • Patent number 3,112,376
    • Issue date Nov 26, 1963
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3045074
    • Patent number 3,045,074
    • Issue date Jul 17, 1962
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2924673
    • Patent number 2,924,673
    • Issue date Feb 9, 1960
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2757311
    • Patent number 2,757,311
    • Issue date Jul 31, 1956
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2756282
    • Patent number 2,756,282
    • Issue date Jul 24, 1956
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2748200
    • Patent number 2,748,200
    • Issue date May 29, 1956
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2733303
    • Patent number 2,733,303
    • Issue date Jan 31, 1956
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2733304
    • Patent number 2,733,304
    • Issue date Jan 31, 1956
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2691073
    • Patent number 2,691,073
    • Issue date Oct 5, 1954
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2662123
    • Patent number 2,662,123
    • Issue date Dec 8, 1953
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2496266
    • Patent number 2,496,266
    • Issue date Feb 7, 1950
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2454812
    • Patent number 2,454,812
    • Issue date Nov 30, 1948
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2402188
    • Patent number 2,402,188
    • Issue date Jun 18, 1946
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2366011
    • Patent number 2,366,011
    • Issue date Dec 26, 1944
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2294910
    • Patent number 2,294,910
    • Issue date Sep 8, 1942
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2201345
    • Patent number 2,201,345
    • Issue date May 21, 1940
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2187829
    • Patent number 2,187,829
    • Issue date Jan 23, 1940
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2021638
    • Patent number 2,021,638
    • Issue date Nov 19, 1935
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1743691
    • Patent number 1,743,691
    • Issue date Jan 14, 1930
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1665501
    • Patent number 1,665,501
    • Issue date Apr 10, 1928
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1658338
    • Patent number 1,658,338
    • Issue date Feb 7, 1928
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1643075
    • Patent number 1,643,075
    • Issue date Sep 20, 1927
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1607466
    • Patent number 1,607,466
    • Issue date Nov 16, 1926
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1548039
    • Patent number 1,548,039
    • Issue date Aug 4, 1925
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1533842
    • Patent number 1,533,842
    • Issue date Apr 14, 1925
    • H03 - BASIC ELECTRONIC CIRCUITRY