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Priority claimed from IT03348/81Aexternal-prioritypatent/IT1145033B/it
Application filed by Sig Schweizerische Industrie-GesellschaftfiledCriticalSig Schweizerische Industrie-Gesellschaft
Application grantedgrantedCritical
Publication of ATE11595T1publicationCriticalpatent/ATE11595T1/de