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 Janda Ladislav, Vladimir Javurek, Sebor VaclavfiledCriticalJanda Ladislav
Priority to CS881397ApriorityCriticalpatent/CS264537B1/en
Publication of CS139788A1publicationCriticalpatent/CS139788A1/en
Publication of CS264537B1publicationCriticalpatent/CS264537B1/en