Hartwig Schaper

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Roetgen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Electrochemical luminescent cell
- Patent number 4,782,265
- Issue date Nov 1, 1988
- U.S. Philips Corporation
- Hartwig Schaper
- F21 - LIGHTING
Information Patent Grant
Electrochemical luminescent cell
- Patent number 4,422,006
- Issue date Dec 20, 1983
- U.S. Philips Corporation
- Hartwig Schaper
- F21 - LIGHTING