Robert Hehlen deceased

Person

late of Rabastens, FR

People

Patents Grantslast 30 patents

Information Patent Grant
Method for the control of an electro-optical matrix screen and cont...
- Patent number 5,055,833
- Issue date Oct 8, 1991
- Thomson Grand Public
- Robert Hehlen
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Process for controlling a matrix access display device
- Patent number 4,673,256
- Issue date Jun 16, 1987
- Thomson-CSF
- Robert Hehlen
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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
Electrooptical switching device
- Patent number 4,481,510
- Issue date Nov 6, 1984
- 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
Information Patent Grant
Liquid crystal display device
- Patent number 4,173,757
- Issue date Nov 6, 1979
- Thomson-CSF
- Michel Hareng
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Robert Hehlen deceased

Person

Patents Grantslast 30 patents

Method for the control of an electro-optical matrix screen and cont...

Process for controlling a matrix access display device

System for making a thermo-active device temperature dependent

Thermoelectric effect display device

Electrooptical switching device

Control device for a display screen and display screen controlled b...

Liquid crystal display device