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 H Gruemmert, Rainer LangerfiledCriticalH Gruemmert
Priority to DD20057577ApriorityCriticalpatent/DD132807A1/de
Publication of DD132807A1publicationCriticalpatent/DD132807A1/de