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 Karol Czifrik, Julius BorkafiledCriticalKarol Czifrik
Priority to CS873461ApriorityCriticalpatent/CS260371B1/en
Publication of CS346187A1publicationCriticalpatent/CS346187A1/en
Publication of CS260371B1publicationCriticalpatent/CS260371B1/en