TREA

Sergei I. Dolgov

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  • Chelyabinsk, SU
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Patents Grantslast 30 patents

  • Information Patent Grant

    Mill stand
    • Patent number 4,244,204
    • Issue date Jan 13, 1981
    • Vladimir N. Vydrin
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Roll mill stand
    • Patent number 4,192,165
    • Issue date Mar 11, 1980
    • Vladimir N. Vydrin
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...