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
CA601525A
Inventor
P. Hall Henry
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.)
General Radio Co
Original Assignee
General Radio Co
Publication date
Application grantedgrantedCritical
Publication of CA601525ApublicationCriticalpatent/CA601525A/en