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Publication date
Priority claimed from US06/602,683external-prioritypatent/US4803025A/en
Priority claimed from CS296785Aexternal-prioritypatent/CS274260B2/en
Application filed by Schweizerische Alumunium AgfiledCriticalSchweizerische Alumunium Ag
Priority to CS646689ApriorityCriticalpatent/CS274300B2/en
Publication of CS646689A2publicationCriticalpatent/CS646689A2/en
Publication of CS274300B2publicationCriticalpatent/CS274300B2/en