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 filed by Fr Pour L Ind Et Les Mines SocfiledCriticalFr Pour L Ind Et Les Mines Soc
Application grantedgrantedCritical
Publication of AT16083BpublicationCriticalpatent/AT16083B/de