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
CA683848A
Inventor
I. Mccallum Duncan
M. Schwartz Daniel
N. Hackett Theodore
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.)
Eimco Corp
Original Assignee
Eimco Corp
Publication date
Application grantedgrantedCritical
Publication of CA683848ApublicationCriticalpatent/CA683848A/en