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
CA780365A
Inventor
H. Hawkes Richard
M. Spruill Marvin
F. Suthers Harold
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.)
Sheller Manuf Corp
Original Assignee
Sheller Manuf Corp
Publication date
Application grantedgrantedCritical
Publication of CA780365ApublicationCriticalpatent/CA780365A/en