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 Josef Kovar, Snizek Jiri, Novotny KarelfiledCriticalJosef Kovar
Priority to CS848073ApriorityCriticalpatent/CS242738B1/en
Publication of CS807384A1publicationCriticalpatent/CS807384A1/en
Publication of CS242738B1publicationCriticalpatent/CS242738B1/en