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Application filed by Jaroslav Doc Ing Csc Jerhot, Frantisek Prof Ing Cs Planicka, Josef Doc Ing Csc HrusakfiledCriticalJaroslav Doc Ing Csc Jerhot
Priority to CS853174ApriorityCriticalpatent/CS245997B1/en
Publication of CS317485A1publicationCriticalpatent/CS317485A1/en
Publication of CS245997B1publicationCriticalpatent/CS245997B1/en