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 Jezek, Miloslav Ing ZilkafiledCriticalZdenek Jezek
Priority to CS87773ApriorityCriticalpatent/CS266161B1/en
Publication of CS77387A1publicationCriticalpatent/CS77387A1/en
Publication of CS266161B1publicationCriticalpatent/CS266161B1/en