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
CA855084A
Inventor
H. Culver Irven
D. Orr Warren
E. Orr William
E. Moore Charles
Ford Johnston J
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.)
COPPERFIELD CORP
Original Assignee
COPPERFIELD CORP
Publication date
Application grantedgrantedCritical
Publication of CA855084ApublicationCriticalpatent/CA855084A/en