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
CA749150A
Inventor
Dudte Fred
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.)
HARPER AND SAUDER
Original Assignee
HARPER AND SAUDER
Publication date
Application grantedgrantedCritical
Publication of CA749150ApublicationCriticalpatent/CA749150A/en