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 Jan Ing Zach, Tomas Ing LisnerfiledCriticalJan Ing Zach
Priority to CS873407ApriorityCriticalpatent/CS262964B1/en
Publication of CS340787A1publicationCriticalpatent/CS340787A1/en
Publication of CS262964B1publicationCriticalpatent/CS262964B1/en