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 Vasica, Petr Ing Kruk, Frantisek Ing KupcikfiledCriticalJan Ing Vasica
Priority to CS862812ApriorityCriticalpatent/CS261384B1/en
Publication of CS281286A1publicationCriticalpatent/CS281286A1/en
Publication of CS261384B1publicationCriticalpatent/CS261384B1/en