TREA

in discharge tube amplifiers

Follow

Industry

  • CPC
  • H03F1/13
This industry / category may be too specific. Please go to a parent level for more data

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

H03F1/13in discharge tube amplifiers
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Vacuum tube amplifier having grid as output and plate as input
    • Patent number 7,053,710
    • Issue date May 30, 2006
    • KORG, Inc.
    • Fumio Mieda
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2888524
    • Patent number 2,888,524
    • Issue date May 26, 1959
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2573517
    • Patent number 2,573,517
    • Issue date Oct 30, 1951
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2467736
    • Patent number 2,467,736
    • Issue date Apr 19, 1949
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2458000
    • Patent number 2,458,000
    • Issue date Jan 4, 1949
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2422695
    • Patent number 2,422,695
    • Issue date Jun 24, 1947
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2392415
    • Patent number 2,392,415
    • Issue date Jan 8, 1946
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2367600
    • Patent number 2,367,600
    • Issue date Jan 16, 1945
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2257570
    • Patent number 2,257,570
    • Issue date Sep 30, 1941
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2251629
    • Patent number 2,251,629
    • Issue date Aug 5, 1941
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2247775
    • Patent number 2,247,775
    • Issue date Jul 1, 1941
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2237415
    • Patent number 2,237,415
    • Issue date Apr 8, 1941
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2174154
    • Patent number 2,174,154
    • Issue date Sep 26, 1939
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2141413
    • Patent number 2,141,413
    • Issue date Dec 27, 1938
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2137265
    • Patent number 2,137,265
    • Issue date Nov 22, 1938
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2054421
    • Patent number 2,054,421
    • Issue date Sep 15, 1936
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2036319
    • Patent number 2,036,319
    • Issue date Apr 7, 1936
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1998482
    • Patent number 1,998,482
    • Issue date Apr 23, 1935
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1983047
    • Patent number 1,983,047
    • Issue date Dec 4, 1934
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1976460
    • Patent number 1,976,460
    • Issue date Oct 9, 1934
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1966805
    • Patent number 1,966,805
    • Issue date Jul 17, 1934
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1956964
    • Patent number 1,956,964
    • Issue date May 1, 1934
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1940986
    • Patent number 1,940,986
    • Issue date Dec 26, 1933
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1914593
    • Patent number 1,914,593
    • Issue date Jun 20, 1933
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1912191
    • Patent number 1,912,191
    • Issue date May 30, 1933
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1910604
    • Patent number 1,910,604
    • Issue date May 23, 1933
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1851078
    • Patent number 1,851,078
    • Issue date Mar 29, 1932
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1831340
    • Patent number 1,831,340
    • Issue date Nov 10, 1931
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1829706
    • Patent number 1,829,706
    • Issue date Oct 27, 1931
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1782993
    • Patent number 1,782,993
    • Issue date Nov 25, 1930
    • H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

  • Information Patent Application

    Vacuum tube amplifier
    • Publication number 20040257158
    • Publication date Dec 23, 2004
    • Fumio Mieda
    • H03 - BASIC ELECTRONIC CIRCUITRY