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
CA624894A
Inventor
Harry A. Toulmin, Jr.
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.)
Commonwealth Engineering Company of Ohio
Original Assignee
Commonwealth Engineering Company of Ohio
Publication date
Application grantedgrantedCritical
Publication of CA624894ApublicationCriticalpatent/CA624894A/en