EX-21.1 19 dex211.txt LIST OF SUBSIDIARIES EXHIBIT 21.1 SUBSIDIARIES PRESENT SUBSIDIARIES
State or Jurisdiction Percentage of Voting Entity Name Incorporation Securities Owned ----------- ------------------------- -------------------- Teradyne Assembly Holdings Ltd..................... United Kingdom 100% Teradyne Assembly Limited.......................... United Kingdom 100% Teradyne ATE (Wuxi) Co., Ltd....................... Peoples Republic of China 100% Teradyne Benelux, Inc. (Ltd.)...................... Delaware 100% Teradyne Canada Limited............................ Canada 100% Teradyne Connection Systems de Mexico, S.A. de C.V. Mexico 100% Teradyne Connection Systems SDN BHD................ Malaysia 100% Teradyne de Costa Rica S.A......................... Costa Rica 100% Teradyne EMS Inc................................... Delaware 100% Teradyne GmbH...................................... Germany 100% Teradyne Holdings Limited.......................... United Kingdom 100% Teradyne Limited................................ United Kingdom 100% Teradyne Hong Kong, Ltd............................ Delaware 100% Teradyne International, Ltd........................ Barbados 100% Teradyne Ireland Limited........................... Ireland 100% Teradyne Italia S.r.L.............................. Italy 100% Teradyne Japan, Ltd................................ Delaware 100% Teradyne K.K.................................... Japan 100% Teradyne Korea, Ltd................................ Delaware 100% Teradyne Leasing, Inc.............................. Massachusetts 100% Teradyne Malaysia, Ltd............................. Delaware 100% Teradyne de Mexico, S.A. de C.V.................... Mexico 100% Teradyne Netherlands B.V........................... Netherlands 100% Teradyne Netherlands, Ltd.......................... Delaware 100% Teradyne Performance Systems Limited............... United Kingdom 100% Teradyne Philippines Limited....................... Delaware 100% Teradyne Realty, Inc............................... Massachusetts 100% Teradyne S.A.S..................................... France 100% Teradyne Scandinavia, Inc.......................... Delaware 100% Teradyne Singapore, Ltd............................ Delaware 100% Teradyne Software and Systems Test, Inc............ Delaware 100% Teradyne Spain, Inc................................ Delaware 100% Teradyne Taiwan, Ltd............................... Delaware 100% Teradyne Thailand Inc.............................. Delaware 100% Alternative Delivery Systems Support, Inc.......... North Carolina 100% Control Automation, Inc............................ Delaware 100% GenRad, Inc........................................ Massachusetts 100% Autodiagnos, Inc................................ Delaware 100% Autodiagnos AB.................................. Sweden 100% Autodiagnos BV.................................. Netherlands 100% Autodiagnos GmbH................................ Germany 100%
State or Jurisdiction Percentage of Voting Entity Name Incorporation Securities Owned ----------- ------------------------- -------------------- Autodiagnos LTD........... United Kingdom 100% GenRad AB................. Sweden 100% GenRad GmbH............... Germany 100% GenRad Limited............ United Kingdom 100% GenRad SA................. France 100% GenRad Asia PTE Limited... Singapore 100% GenRad Benelux B.V........ Netherlands 100% GenRad Canada Limited..... Canada 100% GenRad China Limited...... Peoples Republic of China 100% GenRad Europe Limited..... United Kingdom 100% GenRad Holdings Limited... United Kingdom 100% GenRad Ireland LTD........ Ireland 100% GenRad Mexico, Inc........ Delaware 100% Mastertech Automotive Ltd. United Kingdom 100% Mitron Europe Limited..... United Kingdom 100% Herco Technology Corp........ California 100% Kinetrix, Inc................ Delaware 100% Megatest H.K. Ltd............ Hong Kong 100% Teradyne Philippines Ltd..... California 100% Perception Laminates, Inc.... California 100% Softbridge, Inc.............. Delaware 100% Zehntel Holdings, Inc........ California 100% 1000 Washington, Inc......... Massachusetts 100%
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