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 Frantisek Machek, Viktor Kuvsivnikov, Miroslav SvojgrfiledCriticalFrantisek Machek
Priority to CS591376ApriorityCriticalpatent/CS185117B1/cs
Publication of CS185117B1publicationCriticalpatent/CS185117B1/cs