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 Abb Stal AbfiledCriticalAbb Stal Ab
Priority to IN986DE1988priorityCriticalpatent/IN175578B/en
Publication of IN175578BpublicationCriticalpatent/IN175578B/en