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 Strnad, Zdenek Ing Kaspar, Miloslav Ing HejtmanekfiledCriticalJan Strnad
Priority to CS867544ApriorityCriticalpatent/CS260891B1/en
Publication of CS754486A1publicationCriticalpatent/CS754486A1/en
Publication of CS260891B1publicationCriticalpatent/CS260891B1/en