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 Samal Vaclav, Oldrich Ing Skala, Vaclav Kubicek, Josef KosvanecfiledCriticalSamal Vaclav
Priority to CS864638ApriorityCriticalpatent/CS254641B1/en
Publication of CS463886A1publicationCriticalpatent/CS463886A1/en
Publication of CS254641B1publicationCriticalpatent/CS254641B1/en