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 Jan Ing Kolar, Frantisek Ing Csc VintnerfiledCriticalJan Ing Kolar
Priority to CS847312ApriorityCriticalpatent/CS240136B1/en
Publication of CS731284A1publicationCriticalpatent/CS731284A1/en
Publication of CS240136B1publicationCriticalpatent/CS240136B1/en