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Priority claimed from US06/318,375external-prioritypatent/US4437870A/en
Application filed by Corning Glass WorksfiledCriticalCorning Glass Works
Priority claimed from EP82305789Aexternal-prioritypatent/EP0079186B1/de
Application grantedgrantedCritical
Publication of ATE18190T1publicationCriticalpatent/ATE18190T1/de