Sebastiaan F. M. Trommelen

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Eindhoven, NL

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing biconvex lens elements and element formed t...
- Patent number 4,891,053
- Issue date Jan 2, 1990
- U.S. Philips Corp.
- Gerrit E. Bartman
- C03 - GLASS MINERAL OR SLAG WOOL