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 Karel Ing Csc Janu, Karel Ing Stanka, Pavel Ing DvorskyfiledCriticalKarel Ing Csc Janu
Priority to CS86683ApriorityCriticalpatent/CS253980B1/cs
Publication of CS68386A1publicationCriticalpatent/CS68386A1/cs
Publication of CS253980B1publicationCriticalpatent/CS253980B1/cs