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 US08/205,962external-prioritypatent/US5724390A/en
Application filed by At & T CorpfiledCriticalAt & T Corp
Priority to SG1995000007ApriorityCriticalpatent/SG28195A1/en
Publication of SG28195A1publicationCriticalpatent/SG28195A1/en