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
CA679691A
Inventor
S. Sizer Phillip
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.)
Otis Engineering Corp
Original Assignee
Otis Engineering Corp
Publication date
Application grantedgrantedCritical
Publication of CA679691ApublicationCriticalpatent/CA679691A/en