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 Jindrich CernyfiledCriticalJindrich Cerny
Priority to CS437677ApriorityCriticalpatent/CS193250B1/en
Publication of CS193250B1publicationCriticalpatent/CS193250B1/en