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 Otakar Cerny, Jan KostalfiledCriticalOtakar Cerny
Priority to CS108076ApriorityCriticalpatent/CS193716B1/cs
Publication of CS193716B1publicationCriticalpatent/CS193716B1/cs