Philippe Marcenac

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Paris, FR

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Patents Grantslast 30 patents

Information Patent Grant
System for making a thermo-active device temperature dependent
- Patent number 4,621,261
- Issue date Nov 4, 1986
- Thomson-CSF
- Robert Hehlen
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Thermoelectric effect display device
- Patent number 4,525,708
- Issue date Jun 25, 1985
- Thomson-CSF
- Michel Hareng
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Control device for a display screen and display screen controlled b...
- Patent number 4,427,997
- Issue date Jan 24, 1984
- Thomson-CSF
- Michel Hareng
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS