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
CA810981A
Inventor
R. Keyser Lewis
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.)
Price Brothers Co
Original Assignee
Price Brothers Co
Publication date
Application grantedgrantedCritical
Publication of CA810981ApublicationCriticalpatent/CA810981A/en