| 78244891 | ECS | Medtronic, Inc. | — |
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| 74034669 | ECS | Eclipse Computer Solutions, Inc. | 1633548 |
| 85540727 | ECS | MICRO FOCUS IP DEVELOPMENT LIMITED | — |
| 73799692 | ECS | WATSON WYATT & COMPANY | 1572345 |
| 85633620 | ECS | TECHCROSS INC. | — |
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| 86422510 | ECS | Electronic Control Systems, LLC | — |
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| 78630576 | ECS | Environmental Compliance Services, Inc. | — |
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| 77627690 | ECS | GAMING PARTNERS INTERNATIONAL (GPI) | — |
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| 76580122 | ECS | MEDICAL EDUCATION TECHNOLOGIES, INC. | — |
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| 76121607 | ECS | EDUCATION CREDIT SERVICES, L.L.C. | — |
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| 75911880 | ECS | Electronic Cable Specialists, Inc | — |
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| 75295941 | ECS | Bethlehem Steel Corporation | — |
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| 74139506 | ECS | ELITEGROUP COMPUTER SYSTEMS, INC. | 1725167 |
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| 74034214 | ECS | Engineering Consulting Services | 1628763 |
| 73822357 | ECS | EMPLOYEE COMMUNICATIONS SERVICES, INC. | — |
| 73752873 | ECS | ENGINEERING CONSULTING SERVICES | 1538639 |
| 73590003 | ECS | ENGINEERING CONSULTING SERVICES | — |
| 73582129 | ECS | FISHER & PAYKEL LIMITED | — |
| 73581264 | ECS | FISHER & PAYKEL LIMITED | 1579626 |
| 73364896 | ECS | United Family and Children's Services | 1233142 |
| 73340754 | ECS | Earthware Computer Services | 1239561 |
| 73308358 | ECS | PPG Industries, Inc. A.K.A. ECS COMPANY | 1190365 |
| 73276066 | ECS | Quercia; Lt. Col. Don P. | 1200697 |
| 73271851 | ECS | ECS Microsystems, Inc. | 1191575 |
