Walter Geffcken

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Mainz-Gonsenheim, DT

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Patents Grantslast 30 patents

Information Patent Grant
Optical glasses with improved varying partial dispersion in the opt...
- Patent number 4,066,464
- Issue date Jan 3, 1978
- Jenaer Glaswerk Schott & Gen.
- Marga Faulstich
- C03 - GLASS MINERAL OR SLAG WOOL