Gerard Halna du Fretay

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Saint-Michel sur Orge, FR

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Patents Grantslast 30 patents

Information Patent Grant
Molding process for the fabrication of hollow shaped articles
- Patent number 4,216,253
- Issue date Aug 5, 1980
- Rhone-Poulenc Industries
- Claude Bonnebat
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL