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Application filed by Glasfabriken-Ausruestergesellschaft M.B.H.filedCriticalGlasfabriken-Ausruestergesellschaft M.B.H.
Priority claimed from EP82890003Aexternal-prioritypatent/EP0056795B1/en
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Publication of ATE6850T1publicationCriticalpatent/ATE6850T1/en