1 EXHIBIT 21.1 SUBSIDIARIES OF THE REGISTRANT Name of Subsidiary State of Incorporation The following lists the subsidiaries of Allegheny Teledyne Incorporated as of March 27, 1997, excluding those subsidiaries which, considered in the aggregate as a single subsidiary, do not constitute a significant subsidiary. The subsidiaries listed are all wholly owned, either directly or indirectly. Allegheny Ludlum Corporation Pennsylvania Teledyne, Inc. Delaware Teledyne Industries, Inc. California Jessop Steel Company Pennsylvania AII Acquisition Corp. Delaware