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
Application number
CA816446A
Inventor
Robert S. Sprinkle, Iii
Richard M. Irby, Jr.
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.)
Brown and Williamson Holdings Inc
Original Assignee
American Tobacco Co
Publication date
Application grantedgrantedCritical
Publication of CA816446ApublicationCriticalpatent/CA816446A/en