Benjamin D. Kaufman

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St. Clair, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for forming a threaded hole in a hydroformed part
- Patent number 6,931,901
- Issue date Aug 23, 2005
- General Motors Corporation
- Mircea M. Ghiran
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Punch for piercing and sealing hydroformed parts
- Patent number 6,658,908
- Issue date Dec 9, 2003
- General Motors Corporation
- Mircea M Ghiran
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
Method and apparatus for forming a threaded hole in a hydroformed part
- Publication number 20050081589
- Publication date Apr 21, 2005
- Mircea M. Ghiran
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...