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 DE3709363Aexternal-prioritypatent/DE3709363C1/de
Application filed by Metallgesellschaft AgfiledCriticalMetallgesellschaft Ag
Priority to IN640/CAL/87ApriorityCriticalpatent/IN169472B/en
Publication of IN169472BpublicationCriticalpatent/IN169472B/en