| Abbreviation | Definition |
|---|---|
| BU | Burndy |
| BX | Bendix |
| CA | Carrier |
| CC | Captor |
| CD | Chalmers Datenforung |
| CD | Cornell Dubilier |
| CE | Con Ele Dyn |
| CESA | Catering Equipment Suppliers Association |
| CG | Chicago Lamp |
| CI | Cinch |
| CK | Component Research |
| CL | Centralab |
| CLSA | Canadian Laboratory Suppliers Association |
| CM | Cambridge Thermionics |
| CM | Clipper Marine |
| CMS | Central Marine Services |
| CN | Corning |
| CNPC | China National Petroleum Corp |
| CO | Canon |
| COE | U.S. Army Corps of Engineers |