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 Vojtech Kovac, Eduard Mizes, Karel KovarikfiledCriticalVojtech Kovac
Priority to CS907873ApriorityCriticalpatent/CS180145B1/cs
Publication of CS180145B1publicationCriticalpatent/CS180145B1/cs