Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Polak Josef, Josef Mrazek, Frantisek Brezina, Vladislav RafajfiledCriticalPolak Josef
Priority to CS87326ApriorityCriticalpatent/CS261252B1/en
Publication of CS32687A1publicationCriticalpatent/CS32687A1/en
Publication of CS261252B1publicationCriticalpatent/CS261252B1/en