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 DD16068772ApriorityCriticalpatent/DD98124A1/xx
Priority to DE19722238217prioritypatent/DE2238217A1/de
Priority to FR7243450Aprioritypatent/FR2171719A5/fr
Publication of DD98124A1publicationCriticalpatent/DD98124A1/xx