Roger Frin

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Liffre, FR

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Patents Grantslast 30 patents

Information Patent Grant
Plate antenna with double crossed polarizations
- Patent number 4,922,263
- Issue date May 1, 1990
- L'Etat Francais, represente par le Ministre des PTT, Centre National d'Etudes...
- Gerard Dubost
- H01 - BASIC ELECTRIC ELEMENTS