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 Fedor Simkovic, Milan Martonka, Jan PlavkafiledCriticalFedor Simkovic
Priority to CS488377ApriorityCriticalpatent/CS191684B1/cs
Publication of CS191684B1publicationCriticalpatent/CS191684B1/cs