Legal status (The legal status 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 status listed.)
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
Publication of DE2206021A1publicationCriticalpatent/DE2206021A1/de
Application grantedgrantedCritical
Publication of DE2206021CpublicationCriticalpatent/DE2206021C/de