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
CA904318A
Inventor
D. E. Whiting Keith
H. Sankey George
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.)
Minnesota 3M Laboratories Ltd
Original Assignee
Minnesota 3M Laboratories Ltd
Publication date
Application grantedgrantedCritical
Publication of CA904318ApublicationCriticalpatent/CA904318A/en