David Wiesenfeld

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Givataim, ZA

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Patents Grantslast 30 patents

Information Patent Grant
Rock bolt
- Patent number 4,955,219
- Issue date Sep 11, 1990
- Videx-Wire Products (Proprietary) Limited
- Moshe Josef
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...