Stefan Gruhlke

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Wurselen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Pigment coated lamp and luminaire emitting colored light
- Patent number 6,520,664
- Issue date Feb 18, 2003
- Koninklijke Philips Electronics N.V.
- Thomas Amrein
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Display screen comprising an adhesive layer
- Patent number 5,936,340
- Issue date Aug 10, 1999
- U.S. Philips Corporation
- Helmut Bechtel
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method of manufacturing a display tube
- Patent number 5,360,361
- Issue date Nov 1, 1994
- U.S. Philips Corporation
- Helmut Bechtel
- H01 - BASIC ELECTRIC ELEMENTS