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 Ing Dittert, Jaroslav SvarcberkfiledCriticalIvan Ing Dittert
Priority to CS835306ApriorityCriticalpatent/CS241223B1/en
Publication of CS530683A1publicationCriticalpatent/CS530683A1/en
Publication of CS241223B1publicationCriticalpatent/CS241223B1/en