Rayment G. Koopmans

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Fox Lake, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Quick change structure for trim die
- Patent number 4,930,334
- Issue date Jun 5, 1990
- Deere & Company
- Edgar J. Buehler
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...