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 filedfiledCritical
Priority to DD18658475ApriorityCriticalpatent/DD123796A2/xx
Priority to DE19752544695prioritypatent/DE2544695A1/de
Publication of DD123796A2publicationCriticalpatent/DD123796A2/xx
