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
CA730281A
Inventor
Berger Paul
Original Assignee
Advance Transformer Co
Publication date
Application grantedgrantedCritical
Publication of CA730281ApublicationCriticalpatent/CA730281A/en