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 Benes Frantisek, Vaclav Ing Holub, Vaclav KostohryzfiledCriticalBenes Frantisek
Priority to CS404689ApriorityCriticalpatent/CS275522B2/en
Publication of CS8904046A1publicationCriticalpatent/CS8904046A1/en
Publication of CS275522B2publicationCriticalpatent/CS275522B2/en