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 Antonin Skubnik, Jindrich CizekfiledCriticalAntonin Skubnik
Priority to CS898675ApriorityCriticalpatent/CS187643B1/en
Publication of CS187643B1publicationCriticalpatent/CS187643B1/en