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 DegussafiledCriticalDegussa
Priority to IN617CA1993priorityCriticalpatent/IN179946B/en
Publication of IN179946BpublicationCriticalpatent/IN179946B/en