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 DD16392472ApriorityCriticalpatent/DD98032A1/xx
Priority to DE19722239804prioritypatent/DE2239804A1/de
Priority to AT721672Aprioritypatent/AT325563B/de
Priority to GB4536572Aprioritypatent/GB1380654A/en
Priority to SE7212761Aprioritypatent/SE411849B/xx
Priority to FR7317856Aprioritypatent/FR2189132B3/fr
Publication of DD98032A1publicationCriticalpatent/DD98032A1/xx
