Andrzej Pietrzykowski

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Carcow, PL

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Patents Grantslast 30 patents

Information Patent Grant
Rolling mill for reducing the thickness of the wall of a tube
- Patent number 4,602,493
- Issue date Jul 29, 1986
- Akademia Gorniczo-Hutnicza Im. Stanislawa Staszica
- Wladyslaw Dobrucki
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...