Jean-Francois Dupraz

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Veyziat, FR

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for magnetic securing a spectacle frame to a support
- Patent number 6,168,273
- Issue date Jan 2, 2001
- Etablissements Rochaix Neyron
- Jean-Francois Dupraz
- G02 - OPTICS