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Application filed by Trnka Jan, Jan Kabatek, Jan Fikrle, Jarmila KrulovafiledCriticalTrnka Jan
Priority to CS875378ApriorityCriticalpatent/CS264374B1/en
Publication of CS537887A1publicationCriticalpatent/CS537887A1/en
Publication of CS264374B1publicationCriticalpatent/CS264374B1/en