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 US08/226,606external-prioritypatent/US5398073A/en
Application filed by At & T CorpfiledCriticalAt & T Corp
Priority to SG1995000223ApriorityCriticalpatent/SG24119A1/en
Publication of SG24119A1publicationCriticalpatent/SG24119A1/en