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Application filed by Vaclav Misik, Rudolf Plitek, Vladimir MlejnekfiledCriticalVaclav Misik
Priority to CS864648ApriorityCriticalpatent/CS261630B1/en
Publication of CS464886A1publicationCriticalpatent/CS464886A1/en
Publication of CS261630B1publicationCriticalpatent/CS261630B1/en