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
CA701290A
Inventor
D. Parker William
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.)
Winn and Coales Ltd
Original Assignee
Winn and Coales Ltd
Publication date
Application grantedgrantedCritical
Publication of CA701290ApublicationCriticalpatent/CA701290A/en