TREA

Earl G. Roggenburk

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  • Marathon, FL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Rotary internal combustion engine
    • Patent number 4,662,329
    • Issue date May 5, 1987
    • Earl G. Roggenburk
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS