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 Jenista, Richard KarasekfiledCriticalVaclav Jenista
Priority to CS847875ApriorityCriticalpatent/CS244047B1/cs
Publication of CS787584A1publicationCriticalpatent/CS787584A1/cs
Publication of CS244047B1publicationCriticalpatent/CS244047B1/cs