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Boris S. Dolzhenkov

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  • Kuibyshev, SU
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sheet rolling method
    • Patent number 4,250,726
    • Issue date Feb 17, 1981
    • Matvei M. Safian
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...