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 Kamas, Erben, Rudolf VeselyfiledCriticalFrantisek Kamas
Priority to CS427071ApriorityCriticalpatent/CS193604B1/cs
Publication of CS193604B1publicationCriticalpatent/CS193604B1/cs