TREA

Helmut Rocker

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  • Lochgau, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Process for producing soot filter elements
    • Patent number 4,948,549
    • Issue date Aug 14, 1990
    • Filterwerk Mann & Hummel GmbH
    • Hans Erdmannsdorfer
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES