Eva G. Hoelzel

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Mainz-Finthen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Phototropic glass with a refractive index greater than or equal to...
- Patent number 4,686,196
- Issue date Aug 11, 1987
- Schott Glaswerke
- Georg Gliemeroth
- C03 - GLASS MINERAL OR SLAG WOOL