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
CA849780A
Inventor
A. Howard John
C. Howard Arthur
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.)
Rotary Hoes Ltd
Original Assignee
Rotary Hoes Ltd
Publication date
Application grantedgrantedCritical
Publication of CA849780ApublicationCriticalpatent/CA849780A/en