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
Priority claimed from DE19722223703external-prioritypatent/DE2223703A1/de
Application filedfiledCritical
Publication of NL7306719ApublicationCriticalpatent/NL7306719A/xx
