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 Jaroslav VavrysfiledCriticalJaroslav Vavrys
Priority to CS858720ApriorityCriticalpatent/CS263253B1/en
Publication of CS872085A1publicationCriticalpatent/CS872085A1/en
Publication of CS263253B1publicationCriticalpatent/CS263253B1/en