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
CA627920A
Inventor
A. Nelson Ralph
L. Downs Martin
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.)
Thilmany Pulp and Paper Co
Original Assignee
Thilmany Pulp and Paper Co
Publication date
Application grantedgrantedCritical
Publication of CA627920ApublicationCriticalpatent/CA627920A/en