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 Zeleny, Vladislav Otruba, Jiri Hanak, Josef Kyzivat, Frantisek BezuchafiledCriticalJosef Zeleny
Priority to CS148673ApriorityCriticalpatent/CS180702B1/cs
Publication of CS180702B1publicationCriticalpatent/CS180702B1/cs