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 DE19873712726external-prioritypatent/DE3712726A1/de
Application filed by Metallgesellschaft AgfiledCriticalMetallgesellschaft Ag
Priority to IN491/CAL/90ApriorityCriticalpatent/IN171157B/en
Publication of IN171157BpublicationCriticalpatent/IN171157B/en