Imperial - BELMONT RADIO CORP.

INSULINE CORP. OF AMERICA - I.C.A., Classic, Mascot, 30-30 Northern Blvd., Long Island City, N. Y.

INTERNATIONAL RADIO CORP. - Airite, Kadette, St. Regis, later operated as KADETTE RADIO CORP., Ann Arbor, Mich

INTERNATIONAL TRADING CORP., Herald, 176 W. Adams, St., Chicago, Ill

Inter-Ocean, Inter-Ocean Radio Corp. (Zenith or Skyrover on escutcheon) - ZENITH RADIO CORP.

Inverse Duplex - GRIMES, DAVID, INC.