TREA

David A. Whitehead

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  • Stamford, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Valve
    • Patent number 4,502,452
    • Issue date Mar 5, 1985
    • Massey-Ferguson-Perkins Limited
    • David A. Whitehead
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Engine sump
    • Patent number 4,479,463
    • Issue date Oct 30, 1984
    • Perkins Engine Group Limited
    • Laurence D. Curley
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS