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 Ladislav Prof Ing Csc ZborayfiledCriticalLadislav Prof Ing Csc Zboray
Priority to CS862798ApriorityCriticalpatent/CS257469B1/cs
Publication of CS279886A1publicationCriticalpatent/CS279886A1/cs
Publication of CS257469B1publicationCriticalpatent/CS257469B1/cs