TREA

Vitalil Skalyga

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  • Wuppertal, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hollow crown drill
    • Patent number 5,980,168
    • Issue date Nov 9, 1999
    • Hilti Aktiengesellschaft
    • Nekhemian Tsypin
    • B28 - WORKING CEMENT, CLAY, OR STONE