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 IN151MA1991external-prioritypatent/IN172576B/en
Application filed by American Telephone & TelegraphfiledCriticalAmerican Telephone & Telegraph
Priority to IN606MA1992priorityCriticalpatent/IN174338B/en
Publication of IN174338BpublicationCriticalpatent/IN174338B/en