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
CA759632A
Inventor
M. Smyth Donald
A. Shirn George
Original Assignee
Sprague Electric Co
Publication date
Application grantedgrantedCritical
Publication of CA759632ApublicationCriticalpatent/CA759632A/en