TREA

Hugh Menown

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  • Writtle, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Laser apparatus
    • Patent number 4,907,243
    • Issue date Mar 6, 1990
    • English Electric Valve Company, Ltd.
    • Hugh Menown
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Discharge tubes
    • Patent number 4,896,073
    • Issue date Jan 23, 1990
    • English Electric Valve Company Limited
    • Arthur Maitland
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Thyratrons
    • Patent number 4,890,034
    • Issue date Dec 26, 1989
    • English Electric Valve Company Limited
    • Hugh Menown
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Discharge tube apparatus
    • Patent number 4,805,180
    • Issue date Feb 14, 1989
    • English Electric Valve Company Limited
    • Arthur Maitland
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Discharge tubes
    • Patent number 4,794,614
    • Issue date Dec 27, 1988
    • English Electric Valve Company Limited
    • Arthur Maitland
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Thyratron having thermionic cathode material between anode and cont...
    • Patent number 4,761,794
    • Issue date Aug 2, 1988
    • English Electric Valve Company Limited
    • Hugh Menown
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Thyratron having anode and multiple grids
    • Patent number 4,703,226
    • Issue date Oct 27, 1987
    • English Electric Valve Company Limited
    • Hugh Menown
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Apparatus for forming electron beams
    • Patent number 4,698,546
    • Issue date Oct 6, 1987
    • English Electric Valve Company Limited
    • Arthur Maitland
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Thyratron interrupters
    • Patent number 4,639,643
    • Issue date Jan 27, 1987
    • English Electric Valve Company Limited
    • Timothy P. Donaldson
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Thyratrons
    • Patent number 4,577,138
    • Issue date Mar 18, 1986
    • English Electric Valve Company
    • Hugh Menown
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Thyratron capable of reverse conduction
    • Patent number 4,527,090
    • Issue date Jul 2, 1985
    • English Electric Valve Company Limited
    • Hugh Menown
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Laser arrangements
    • Patent number 4,498,181
    • Issue date Feb 5, 1985
    • English Electric Valve Company Limited
    • Hugh Menown
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Thyratrons
    • Patent number 4,429,253
    • Issue date Jan 31, 1984
    • English Electric Valve Company Limited
    • Timothy P. Donaldson
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Segmented discharge tube devices
    • Patent number 4,403,167
    • Issue date Sep 6, 1983
    • English Electric Valve Company Limited
    • Arthur Maitland
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Thyratron having anode with low work function material
    • Patent number 4,356,426
    • Issue date Oct 26, 1982
    • English Electric Valve Company Limited
    • Hugh Menown
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Double-ended thyratron having at least three grids
    • Patent number 4,293,800
    • Issue date Oct 6, 1981
    • English Electric Valve Company
    • Hugh Menown
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Thyratrons
    • Patent number 4,123,684
    • Issue date Oct 31, 1978
    • English Electric Valve Company Limited
    • Hugh Menown
    • H01 - BASIC ELECTRIC ELEMENTS