1936: The Ken-Rad Corporation, Incorporated, A Division Of Ken-Rad Tube & Lamp Corporation, Owensboro, Kentucky.
1946: A product of General Electric Company, Electronics Department, Schenectady 5, New York.
1936: The Ken-Rad Corporation, Incorporated, A Division Of Ken-Rad Tube & Lamp Corporation, Owensboro, Kentucky.
1946: A product of General Electric Company, Electronics Department, Schenectady 5, New York.