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Priority claimed from US06/249,230external-prioritypatent/US4358822A/en
Application filed by Juan Martin SanchezfiledCriticalJuan Martin Sanchez
Priority claimed from EP81102621Aexternal-prioritypatent/EP0037579B1/en
Application grantedgrantedCritical
Publication of ATE21568T1publicationCriticalpatent/ATE21568T1/en