TREA

Helmut Riegel

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  • Gelsenkirchen, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Process for the operation of an Otto engine
    • Patent number 4,955,331
    • Issue date Sep 11, 1990
    • Vebe Oel Aktiengesellschaft
    • Dieter Hohr
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS