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
CA764569A
Inventor
W. Wells Ralph
Palmer Gilbert
F. Clifford Glynne
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.)
Wilkinson Sword Ltd
Graviner Manufacturing Co Ltd
Original Assignee
Wilkinson Sword Ltd
Graviner Manufacturing Co Ltd
Publication date
Application grantedgrantedCritical
Publication of CA764569ApublicationCriticalpatent/CA764569A/en