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 Tomovcik, Frantisek CermakfiledCriticalJan Tomovcik
Priority to CS7400006105ApriorityCriticalpatent/CS179540B1/cs
Publication of CS179540B1publicationCriticalpatent/CS179540B1/cs