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 Jiri Zavrel, Josef Duda, Jiri ProchazkafiledCriticalJiri Zavrel
Priority to CS88406ApriorityCriticalpatent/CS264535B1/en
Publication of CS40688A1publicationCriticalpatent/CS40688A1/en
Publication of CS264535B1publicationCriticalpatent/CS264535B1/en