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Application filed by Heinz Lehmann, Gerhard Hendrich, Manfred Barth, Manfred Hippe, Wilfried BohndorffiledCriticalHeinz Lehmann
Priority to DD13860269ApriorityCriticalpatent/DD73538A1/de
Priority to DD14150469Aprioritypatent/DD80229A2/de
Publication of DD73538A1publicationCriticalpatent/DD73538A1/de