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
Publication date
Priority to CA77415FpriorityCriticalpatent/CA77415S/en
Application grantedgrantedCritical
Publication of CA77415SpublicationCriticalpatent/CA77415S/en