TREA

Paul A. Grayden

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  • Wantirna South, AU
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Patents Grantslast 30 patents

  • Information Patent Grant

    Pump
    • Patent number 4,737,073
    • Issue date Apr 12, 1988
    • Prescant Pty. Limited
    • Paul A. Grayden
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Water ring vacuum pump having adjustable part plates and a hollow i...
    • Patent number 4,637,780
    • Issue date Jan 20, 1987
    • Prescant Pty. Limited
    • Paul A. Grayden
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES