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 Frantisek Prokes, Josef Ulrych, Jaromir ValeckofiledCriticalFrantisek Prokes
Priority to CS7600007922ApriorityCriticalpatent/CS184277B1/cs
Publication of CS184277B1publicationCriticalpatent/CS184277B1/cs