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 Vaclav Ing Csc Homola, Eugen Ing Kordik, Vokral VaclavfiledCriticalVaclav Ing Csc Homola
Priority to CS837542ApriorityCriticalpatent/CS237728B1/en
Publication of CS754283A1publicationCriticalpatent/CS754283A1/en
Publication of CS237728B1publicationCriticalpatent/CS237728B1/en