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Application filed by Frantisek Doc Ing Csc Pfrogner, Vacik Petr, Miroslav RehorfiledCriticalFrantisek Doc Ing Csc Pfrogner
Priority to CS843949ApriorityCriticalpatent/CS253959B1/en
Publication of CS394984A1publicationCriticalpatent/CS394984A1/en
Publication of CS253959B1publicationCriticalpatent/CS253959B1/en