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 Kurt Mauersberger, Guenter Meier, Guenter SchmidtfiledCriticalKurt Mauersberger
Priority to DD20514878ApriorityCriticalpatent/DD136301B1/de
Publication of DD136301A1publicationCriticalpatent/DD136301A1/de
Publication of DD136301B1publicationCriticalpatent/DD136301B1/de