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Application filed by Pospisil Bedrich, Miloslav SvobodafiledCriticalPospisil Bedrich
Priority to CS848676ApriorityCriticalpatent/CS243297B1/en
Publication of CS867684A1publicationCriticalpatent/CS867684A1/en
Publication of CS243297B1publicationCriticalpatent/CS243297B1/en