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 Milan Ing Walek, Josef Staszko, Jiri DlezalfiledCriticalMilan Ing Walek
Priority to CS859990ApriorityCriticalpatent/CS256883B1/en
Publication of CS999085A1publicationCriticalpatent/CS999085A1/en
Publication of CS256883B1publicationCriticalpatent/CS256883B1/en