Gerard Perrin

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Chatenois les Forges, FR

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing a hollow shaft with internal swellings of r...
- Patent number 5,027,996
- Issue date Jul 2, 1991
- Floquet Monopole
- Michel A. Fefeu
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...