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 CS838114ApriorityCriticalpatent/CS243620B1/en
Publication of CS811483A1publicationCriticalpatent/CS811483A1/en
Publication of CS243620B1publicationCriticalpatent/CS243620B1/en