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 Borivoj OkurekfiledCriticalBorivoj Okurek
Priority to CS631875ApriorityCriticalpatent/CS183168B1/cs
Publication of CS183168B1publicationCriticalpatent/CS183168B1/cs