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 Zdenek Ing Kolman, Prchlik Vojtech, Vavra Zdenek, Vurm VladimirfiledCriticalZdenek Ing Kolman
Priority to CS859179ApriorityCriticalpatent/CS254490B1/en
Publication of CS917985A1publicationCriticalpatent/CS917985A1/en
Publication of CS254490B1publicationCriticalpatent/CS254490B1/en