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Priority claimed from US06/272,885external-prioritypatent/US4492957A/en
Application filed by Interstate Electronics CorpfiledCriticalInterstate Electronics Corp
Priority claimed from EP81303065Aexternal-prioritypatent/EP0044182B1/de
Application grantedgrantedCritical
Publication of ATE38106T1publicationCriticalpatent/ATE38106T1/de