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Priority claimed from FR8801288Aexternal-prioritypatent/FR2626871A1/en
Priority claimed from US07/163,528external-prioritypatent/US4786617A/en
Application filed by Corning Glass WorksfiledCriticalCorning Glass Works
Application grantedgrantedCritical
Publication of ATE60751T1publicationCriticalpatent/ATE60751T1/en