Legal status (The legal status 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 status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
AT&T Corp
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 claimed from EP94307606Aexternal-prioritypatent/EP0708501B1/en
Application grantedgrantedCritical
Publication of DE69422289D1publicationCriticalpatent/DE69422289D1/de