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 At & T CorpfiledCriticalAt & T Corp
Priority to SG1996000904ApriorityCriticalpatent/SG49608A1/en
Publication of SG49608A1publicationCriticalpatent/SG49608A1/en