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 Ervin Odehnal, Karel ProchazkafiledCriticalErvin Odehnal
Priority to CS51677ApriorityCriticalpatent/CS192726B1/en
Publication of CS192726B1publicationCriticalpatent/CS192726B1/en