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Priority claimed from CH686580Aexternal-prioritypatent/CH651594A5/de
Application filed by Schweizerische Aluminium AgfiledCriticalSchweizerische Aluminium Ag
Priority claimed from EP80810361Aexternal-prioritypatent/EP0030212B1/de
Application grantedgrantedCritical
Publication of ATE2445T1publicationCriticalpatent/ATE2445T1/de