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 Das Gupta BirenfiledCriticalDas Gupta Biren
Priority to IN1020/CAL/88ApriorityCriticalpatent/IN171036B/en
Publication of IN171036BpublicationCriticalpatent/IN171036B/en