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 Emanuel Krivanek, Vaclav TrunecfiledCriticalEmanuel Krivanek
Priority to CS891737ApriorityCriticalpatent/CS173789A3/en
Publication of CS173789A3publicationCriticalpatent/CS173789A3/en