TREA

Helmut Walter

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  • Offenbach, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Mixing device
    • Patent number 4,778,277
    • Issue date Oct 18, 1988
    • Kraftwerk Union Aktiengesellschaft
    • Gerhard Kratz
    • B28 - WORKING CEMENT, CLAY, OR STONE