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Application filed by Franz Tamm, Bernhard Hoericke, Albert Widmer, Wolfgang SchmittfiledCriticalFranz Tamm
Priority to DD19938277ApriorityCriticalpatent/DD132355B1/de
Publication of DD132355A1publicationCriticalpatent/DD132355A1/de
Publication of DD132355B1publicationCriticalpatent/DD132355B1/de