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Priority claimed from US06/475,523external-prioritypatent/US4447459A/en
Application filed by John J Balboni, Leon HongfiledCriticalJohn J Balboni
Priority claimed from EP84901520Aexternal-prioritypatent/EP0138967B1/de
Application grantedgrantedCritical
Publication of ATE44644T1publicationCriticalpatent/ATE44644T1/de