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 Jiri Ing Zachoval, Zdenek Ing Konecny, Oldrich Ing Navratil, Josef Ing Csc Lutha, Jan Ing NemcanskyfiledCriticalJiri Ing Zachoval
Priority to CS853914ApriorityCriticalpatent/CS252426B1/en
Publication of CS391485A1publicationCriticalpatent/CS391485A1/en
Publication of CS252426B1publicationCriticalpatent/CS252426B1/en