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 Pudil Frantisek, Zdenek VaclavikfiledCriticalPudil Frantisek
Priority to CS874727ApriorityCriticalpatent/CS261283B1/en
Publication of CS472787A1publicationCriticalpatent/CS472787A1/en
Publication of CS261283B1publicationCriticalpatent/CS261283B1/en