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 Prochazka Jan, Zdenek Ing Frundl, Kacin JanfiledCriticalProchazka Jan
Priority to CS84555ApriorityCriticalpatent/CS240791B1/cs
Publication of CS55584A1publicationCriticalpatent/CS55584A1/cs
Publication of CS240791B1publicationCriticalpatent/CS240791B1/cs