Veniamin S. Rotenfeld

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Kiev, SU

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Patents Grantslast 30 patents

Information Patent Grant
Method for welding girth joints in pipe lines
- Patent number 4,336,436
- Issue date Jun 22, 1982
- Vasily Y. Dubovetsky
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Apparatus for removing a welding bulge from pipes
- Patent number 4,231,694
- Issue date Nov 4, 1980
- Mikhail R. Unigovsky
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR