Alexei V. Birjulev

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Belaya Kalitva Rostovskoi oblasti, SU

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Patents Grantslast 30 patents

Information Patent Grant
Backing device for a working roll of a roll stand
- Patent number 4,212,504
- Issue date Jul 15, 1980
- Nikolai I. Krylov
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...