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Priority claimed from US06/557,045external-prioritypatent/US4532800A/en
Priority claimed from US06/584,744external-prioritypatent/US4552090A/en
Application filed by Fabricated MetalsfiledCriticalFabricated Metals
Priority claimed from EP19840306160external-prioritypatent/EP0143520B1/de
Application grantedgrantedCritical
Publication of ATE50544T1publicationCriticalpatent/ATE50544T1/de