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