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 Zdenek Ing Csc ValcfiledCriticalZdenek Ing Csc Valc
Priority to CS903932ApriorityCriticalpatent/CZ279692B6/cs
Publication of CS393290A3publicationCriticalpatent/CS393290A3/cs
Publication of CZ279692B6publicationCriticalpatent/CZ279692B6/cs