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.)
Expired - Lifetime
Application number
CA81077F
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 IPM Corp
Publication date
Priority to CA81077FpriorityCriticalpatent/CA81077S/en
Application grantedgrantedCritical
Publication of CA81077SpublicationCriticalpatent/CA81077S/en