1 Exhibit 21 SUBSIDIARIES OF THE ALLEN GROUP INC. The following is a list of the subsidiaries of The Allen Group Inc. and, indented, Subsidiaries of such Subsidiaries, including in each case the state or other jurisdiction in which each Subsidiary was incorporated or organized, and indicating in each case the percentage of Voting Securities owned by the immediate parent. All such Subsidiaries are consolidated Subsidiaries except GO/DAN Industries, Alven Capital Corporation and Sponmech Limited. State/Country Name of Corporation of Incorporation Date % - ------------------- ---------------- ----- - The Allen Group Canada Limited Ontario, Canada 04-19-72 100 The Allen Group International, Inc. Delaware 07-19-73 100 The Allen Group GmbH (2) West Germany 09-29-70 100 The Allen Group Limited (1) U.K. 05-08-72 100 Allen Heat Transfer Products Inc. Delaware 05-22-90 100 GO/DAN Industries (4) New York 05-24-90 50 Allen Telecom Canada, Inc. (5) Ontario 04-14-93 80 Allen Telecom Group, Inc. Delaware 10-26-88 100 Alven Capital Corporation (3) Delaware 11-10-93 15.9 Antenna Specialists Co., Inc. Delaware 10-07-88 100 Antespec, S.A. de C.V. Mexico 11-14-88 100 The Antenna Specialists S.A. Spain 06-05-90 100 Decibel Mobilcom GmbH Germany 07-28-90 100 Decibel Mobilcom Limited England 01-31-91 100 Grayson Electronics Company (6) Virginia 09-03-86 80 Orion Far East Management Inc. (1) Delaware 07-16-81 100 Orion Industries, Inc., Limited (1) Hong Kong 06-01-71 100 Orion Imports & Exports Limited (1) Hong Kong 09-07-73 100 2 Orion Industries, Inc. Japan (1) Japan 09-73 100 Orion Industries Taiwan Limited Taiwan 10-73 100 (1) MARTA Technologies, Inc. Delaware 10-14-92 100 Sponmech Limited U.K. 12-22-76 33.3 276017 Ontario Limited (1) Ontario, Canada 09-11-73 100 (1) These Subsidiaries are not significant in the aggregate and are no longer active. (2) 95% of the outstanding capital stock of this subsidiary is owned by The Allen Group International, Inc. and the remaining 5% is owned by The Allen Group Inc. (3) On a fully diluted basis, 57.26% of the outstanding capital stock is owned by ATG, 19.35% is owned by Rose Investors and 23.39% is owned by Philadelphia Ventures. (4) A 50% owned general partnership joint venture accounted for under the equity method of accounting. (5) 80% of the outstanding capital stock of this Subsidiary is owned by The Allen Group Inc. and the remaining 20% is owned by senior management of Allen Telecom Canada, Inc. (6) 80% of the outstanding capital stock of this subsidiary is owned by The Allen Group Inc. and the remaining 20% is owned by senior management of Grayson Electronics Company. 2