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 Jan Petrovic, Svetozar Balkovic, Ladislav StevulafiledCriticalJan Petrovic
Priority to CS782176ApriorityCriticalpatent/CS187128B1/cs
Publication of CS187128B1publicationCriticalpatent/CS187128B1/cs