SCHOTT SPEZIALGLAS GMBH

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7252052 Gas-fired heating apparatusExpiredNov 01, 04Aug 07, 07[F23C]
2001/0043,473 Reflector for a high-pressure gas discharge lampAbandonedDec 02, 00Nov 22, 01[F21V, F21K]
2001/0018,836 Process for the production of prestressed or bent glass elementsAbandonedDec 27, 00Sep 06, 01[C03B, B32B]
5424255 High-refractive index phototropic glassExpiredJun 10, 94Jun 13, 95[C03C]

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