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Sergei Ivanovich Koltsov

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  • Barnaul, SU
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Patents Grantslast 30 patents

  • Information Patent Grant

    Profile plano-type knurling machine
    • Patent number 4,114,415
    • Issue date Sep 19, 1978
    • Jury Mikhailovich Vodopyanov
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...