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
CA717599A
Inventor
L. Murphy Nelson
E. Frazier John
A. Elia Benjamin
C. Mccreary James
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.)
Frazier Simplex Inc
Original Assignee
Frazier Simplex Inc
Publication date
Application grantedgrantedCritical
Publication of CA717599ApublicationCriticalpatent/CA717599A/en