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 Marian Mgr Inz Okrasa, Mikolaj Mgr Inz ZimnyfiledCriticalMarian Mgr Inz Okrasa
Publication of CS393886A1publicationCriticalpatent/CS393886A1/en
Publication of CS272156B1publicationCriticalpatent/CS272156B1/en