TREA

English Electric Valve Company Limited

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  • Chelmsford, EN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electric circuit interrupting devices
    • Patent number 4,088,929
    • Issue date May 9, 1978
    • English Electric Valve Company Limited
    • Robert J. Wheldon
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Double ended thyratron with trigger impulse means
    • Patent number 4,081,719
    • Issue date Mar 28, 1978
    • English Electric Valve Company Limited
    • Robert Bewes Molyneux-Berry
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Methods of operating pyroelectric camera tubes
    • Patent number 4,069,502
    • Issue date Jan 17, 1978
    • English Electric Valve Company Limited
    • Peter David Nelson
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Electron-emissive semiconductor devices
    • Patent number 4,060,823
    • Issue date Nov 29, 1977
    • English Electric Valve Company Limited
    • Jonathan Ross Howorth
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Travelling wave tubes
    • Patent number 4,041,349
    • Issue date Aug 9, 1977
    • English Electric Valve Company Limited
    • Peter Robert Davis
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Operation of storage tubes having secondary electron emissive targets
    • Patent number 4,004,182
    • Issue date Jan 18, 1977
    • English Electric Valve Company Limited
    • Ralph Desmond Nixon
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Waveguide to co-axial line junctions
    • Patent number 3,986,148
    • Issue date Oct 12, 1976
    • English Electric Valve Company Limited
    • John Francis Pollard
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Pick-up tubes
    • Patent number 3,986,070
    • Issue date Oct 12, 1976
    • English Electric Valve Company Limited
    • Hans Scholz
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Grid electrodes
    • Patent number 3,970,768
    • Issue date Jul 20, 1976
    • English Electric Valve Company Limited
    • David Mark Wilcox
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Pyroelectric camera tubes
    • Patent number 3,946,232
    • Issue date Mar 23, 1976
    • English Electric Valve Company Limited
    • Alan Lewis Harmer
    • H01 - BASIC ELECTRIC ELEMENTS

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