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 Petr Ing Csc Vratny, Coupek Jiri, Vozka StanislavfiledCriticalPetr Ing Csc Vratny
Priority to CS832629ApriorityCriticalpatent/CS230943B1/cs
Publication of CS262983A1publicationCriticalpatent/CS262983A1/cs
Publication of CS230943B1publicationCriticalpatent/CS230943B1/cs