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
CA642147A
Inventor
H. Mcelroy Roy
F. Dykes 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.)
INTERNATIONAL CLAY MACHINERY OF DELAWARE
Original Assignee
INTERNATIONAL CLAY MACHINERY OF DELAWARE
Publication date
Application grantedgrantedCritical
Publication of CA642147ApublicationCriticalpatent/CA642147A/en