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 Hans Jehmlich, Joachim SchulzfiledCriticalHans Jehmlich
Priority to DD20801478ApriorityCriticalpatent/DD139039A1/en
Publication of DD139039A1publicationCriticalpatent/DD139039A1/en