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
CA736633A
Inventor
L. Grundmann Gustave
J. Serafini Joseph
Original Assignee
Radio Corporation of America
Publication date
Application grantedgrantedCritical
Publication of CA736633ApublicationCriticalpatent/CA736633A/en