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 Vaclav ChmelikfiledCriticalVaclav Chmelik
Priority to CS856844ApriorityCriticalpatent/CS252765B1/en
Publication of CS684485A1publicationCriticalpatent/CS684485A1/en
Publication of CS252765B1publicationCriticalpatent/CS252765B1/en