Douglas Pfaff

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Bloomfield Hills, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Punch system for perforating plastic sheets
- Patent number 4,825,739
- Issue date May 2, 1989
- Bernal, Inc.
- Douglas Pfaff
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...