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 Ivan DosoudilfiledCriticalIvan Dosoudil
Priority to CS864317ApriorityCriticalpatent/CS257174B1/en
Publication of CS431786A1publicationCriticalpatent/CS431786A1/en
Publication of CS257174B1publicationCriticalpatent/CS257174B1/en