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 Josef Ing Buchta, Petr Ing Straznicky, Karel Ing CizekfiledCriticalJosef Ing Buchta
Priority to CS893323ApriorityCriticalpatent/CS332389A2/en
Publication of CS332389A2publicationCriticalpatent/CS332389A2/en