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
CA475862A
Inventor
Noral A. Nelson
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.)
HARRY FERGUSON Inc
Original Assignee
HARRY FERGUSON Inc
Publication date
Application grantedgrantedCritical
Publication of CA475862ApublicationCriticalpatent/CA475862A/en