Didier Leonard

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Paris, FR

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Patents Grantslast 30 patents

Information Patent Grant
Device for identification by proximity
- Patent number 4,893,118
- Issue date Jan 9, 1990
- Societe Fontaine
- Jacques Lewiner
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Coded objects identifiable by proximity and devices for changing th...
- Patent number 4,857,913
- Issue date Aug 15, 1989
- Societe Fontaine
- Jacques Lewiner
- G06 - COMPUTING CALCULATING COUNTING