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 MachekfiledCriticalVaclav Machek
Priority to CS871334ApriorityCriticalpatent/CS260070B1/en
Publication of CS133487A1publicationCriticalpatent/CS133487A1/en
Publication of CS260070B1publicationCriticalpatent/CS260070B1/en