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 Bursik, Havlik Jiri, Karel Ing Horky, Josef FormanfiledCriticalJan Ing Bursik
Priority to CS809088ApriorityCriticalpatent/CS273774B1/en
Publication of CS809088A1publicationCriticalpatent/CS809088A1/en
Publication of CS273774B1publicationCriticalpatent/CS273774B1/en