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 Michal Ing Weis, Zelmira Ing Mozolova, Ladislav Ing Nagy, Josef Ing Csc SchroeffelfiledCriticalMichal Ing Weis
Priority to CS847977ApriorityCriticalpatent/CS250813B1/en
Publication of CS797784A1publicationCriticalpatent/CS797784A1/en
Publication of CS250813B1publicationCriticalpatent/CS250813B1/en