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Application filed by Jan Nemcaty, Dalibor Kral, Jozef Prchal, Ivan SlapalfiledCriticalJan Nemcaty
Priority to CS84986ApriorityCriticalpatent/CS257572B3/en
Publication of CS84986A1publicationCriticalpatent/CS84986A1/en
Publication of CS257572B3publicationCriticalpatent/CS257572B3/en