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 Jiri Ing Drahota, Vladimir SvecfiledCriticalJiri Ing Drahota
Priority to CS85280ApriorityCriticalpatent/CS243890B1/en
Publication of CS28085A1publicationCriticalpatent/CS28085A1/en
Publication of CS243890B1publicationCriticalpatent/CS243890B1/en