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 IN729/DEL/81Aexternal-prioritypatent/IN157527B/en
Application filed by Singapore Chartered IndfiledCriticalSingapore Chartered Ind
Priority to IN109/DEL/85ApriorityCriticalpatent/IN161648B/en
Publication of IN161648BpublicationCriticalpatent/IN161648B/en