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 Piller Bohumil, Matej Poruban, Miroslav Vitula, Jozef Martocko, Vladislav Ing Kramolis, Bohumil Ing Navratil, Karol VrbicanfiledCriticalPiller Bohumil
Priority to CS859149ApriorityCriticalpatent/CS252092B1/en
Publication of CS914985A1publicationCriticalpatent/CS914985A1/en
Publication of CS252092B1publicationCriticalpatent/CS252092B1/en