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
CA805248A
Inventor
R. Davenport William
T. Davenport Elmer
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.)
CROWELL DESIGNS
Original Assignee
CROWELL DESIGNS
Publication date
Application grantedgrantedCritical
Publication of CA805248ApublicationCriticalpatent/CA805248A/en