TREA

David A. Estrabrooks

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  • Newburyport, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Positive displacement rotary machine
    • Patent number 6,212,994
    • Issue date Apr 10, 2001
    • David A. Estrabrooks
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES