Ruggero Bertocchi

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Capriate S.G., IT

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Patents Grantslast 30 patents

Information Patent Grant
Black glass pastes for glazing and their production
- Patent number 5,250,475
- Issue date Oct 5, 1993
- Bayer S.p.A.
- Paul Zybell
- C03 - GLASS MINERAL OR SLAG WOOL