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 Ing Pluskal, Josef Dipl Tech Svercl, Novak Jan, Vaclav DrapacfiledCriticalJan Ing Pluskal
Priority to CS822084ApriorityCriticalpatent/CS237455B1/en
Publication of CS208482A1publicationCriticalpatent/CS208482A1/en
Publication of CS237455B1publicationCriticalpatent/CS237455B1/en