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 Jaroslav RolffiledCriticalJaroslav Rolf
Priority to CS832830ApriorityCriticalpatent/CS231868B1/en
Publication of CS283083A1publicationCriticalpatent/CS283083A1/en
Publication of CS231868B1publicationCriticalpatent/CS231868B1/en