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Application filed by York Pitschel, Ivan Nikoloff, Gerhard ErnstfiledCriticalYork Pitschel
Priority to DD19909177ApriorityCriticalpatent/DD131507B1/de
Publication of DD131507A1publicationCriticalpatent/DD131507A1/de
Publication of DD131507B1publicationCriticalpatent/DD131507B1/de