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 Kocian Miloslav, Bohuslav Houdek, Frantisek Hunal, Jaroslav Ing IllefiledCriticalKocian Miloslav
Priority to CS649689ApriorityCriticalpatent/CS274198B1/en
Publication of CS649689A1publicationCriticalpatent/CS649689A1/en
Publication of CS274198B1publicationCriticalpatent/CS274198B1/en