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Priority claimed from DE3541001Aexternal-prioritypatent/DE3541001C1/de
Application filed by Hespe & Woelm Gmbh & Co KgfiledCriticalHespe & Woelm Gmbh & Co Kg
Application grantedgrantedCritical
Publication of ATE55241T1publicationCriticalpatent/ATE55241T1/de