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 Vladimir Ing Korecky, Igor Ing ChropenfiledCriticalVladimir Ing Korecky
Priority to CS856662ApriorityCriticalpatent/CS252517B1/en
Publication of CS666285A1publicationCriticalpatent/CS666285A1/en
Publication of CS252517B1publicationCriticalpatent/CS252517B1/en