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 Vratislav Doc Ing Csc Duchacek, Antonin Ing Csc Kuta, Ivan Ing Polednik, Petr Ing Csc ZitekfiledCriticalVratislav Doc Ing Csc Duchacek
Priority to CS834556ApriorityCriticalpatent/CS232181B1/en
Publication of CS455683A1publicationCriticalpatent/CS455683A1/en
Publication of CS232181B1publicationCriticalpatent/CS232181B1/en