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
CA638960A
Inventor
M. Burrows Lewis
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.)
Manning Maxwell and Moore Inc
Original Assignee
Manning Maxwell and Moore Inc
Publication date
Application grantedgrantedCritical
Publication of CA638960ApublicationCriticalpatent/CA638960A/en