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 Otakar ValihrachfiledCriticalOtakar Valihrach
Priority to CS849577ApriorityCriticalpatent/CS191818B1/cs
Publication of CS191818B1publicationCriticalpatent/CS191818B1/cs