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
CA719467A
Inventor
Frey Max
A. Richards John
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.)
Cascade Corp
Original Assignee
Cascade Corp
Publication date
Application grantedgrantedCritical
Publication of CA719467ApublicationCriticalpatent/CA719467A/en