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 Hrzan Emil, Petrasek PetrfiledCriticalHrzan Emil
Priority to CS869179ApriorityCriticalpatent/CS259911B1/cs
Publication of CS917986A1publicationCriticalpatent/CS917986A1/cs
Publication of CS259911B1publicationCriticalpatent/CS259911B1/cs