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
Inventor
Mitchell Orville
L. Roden Richard
William P. Freeman, Jr.
D. Harris John
C. Smith Dudley
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.)
Individual
Original Assignee
Dudley C Smith
Richard L Roden
Publication date
Application grantedgrantedCritical
Publication of CA857039ApublicationCriticalpatent/CA857039A/en