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
CA698284A
Inventor
W. Wilkins Edward
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.)
Wilkins and Mitchell Ltd
Original Assignee
Wilkins and Mitchell Ltd
Publication date
Application grantedgrantedCritical
Publication of CA698284ApublicationCriticalpatent/CA698284A/en