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Richard J. Armstrong

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  • Toronto, Ontario, M4T 1E3, CA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Compressed gas motor
    • Patent number 4,928,576
    • Issue date May 29, 1990
    • Richard J. Armstrong
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Axial flow impeller
    • Patent number 4,483,659
    • Issue date Nov 20, 1984
    • Richard J. Armstrong
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES