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
CA876510A
Inventor
A. Richardson Rolland
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.)
Pacific Press and Shear Corp
Original Assignee
Pacific Press and Shear Corp
Publication date
Application grantedgrantedCritical
Publication of CA876510ApublicationCriticalpatent/CA876510A/en