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 Jan Ing Ryznar, Jiri Ing VecerfiledCriticalJan Ing Ryznar
Priority to CS861471ApriorityCriticalpatent/CS266155B1/en
Publication of CS147186A1publicationCriticalpatent/CS147186A1/en
Publication of CS266155B1publicationCriticalpatent/CS266155B1/en