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
CA 12550
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.)
B L ROBERTS
JOHN F MCCARTHY
Original Assignee
B L ROBERTS
JOHN F MCCARTHY
Publication date
Priority to CA 12550priorityCriticalpatent/CA12550S/en
Application grantedgrantedCritical
Publication of CA12550SpublicationCriticalpatent/CA12550S/en