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.)
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Publication date
Priority claimed from IN748/DEL/87Aexternal-prioritypatent/IN171367B/en
Application filed by Geon CofiledCriticalGeon Co
Priority to IN723DE1990priorityCriticalpatent/IN177460B/en
Publication of IN177460BpublicationCriticalpatent/IN177460B/en