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 43557
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.)
Production Research Inc
Production Res Inc
Original Assignee
Production Research Inc
Production Res Inc
Publication date
Priority to CA 43557priorityCriticalpatent/CA43557S/en
Application grantedgrantedCritical
Publication of CA43557SpublicationCriticalpatent/CA43557S/en