| 481 | Detective Agencies | Company Product |
| 482 | Detector | Company Product |
| 483 | Detector Tubes | Company Product |
| 484 | Detectors | Company Product |
| 485 | Detent | Company Product |
| 486 | Detergent Chemicals | Company Product |
| 487 | Detergent Optical Brighteners | Company Product |
| 488 | Detergents | Company Product |
| 489 | Detox | Company Product |
| 490 | Detroit Diesel 12V71 Diesel Engine | Company Product |
| 491 | Detroit Diesel 16v92ta Diesel Engine | Company Product |
| 492 | Detroit Diesel 3-53 Diesel Engine | Company Product |
| 493 | Detroit Diesel 3-71 Diesel Engine | Company Product |
| 494 | Detroit Diesel 4-53 Diesel Engine | Company Product |
| 495 | Detroit Diesel 4-71 Diesel Engine | Company Product |
| 496 | Detroit Diesel 6-71 Diesel Engine | Company Product |
| 497 | Detroit Diesel 8v71 Diesel Engine | Company Product |
| 498 | Detroit Diesel 8v92ta Diesel Engine | Company Product |
| 499 | Detroit Diesel Engines | Company Product |
| 500 | Detroit Diesel Exhaust Valves | Company Product |
| 501 | Detroit Diesel Filters | Company Product |
| 502 | Detroit Diesels | Company Product |
| 503 | Devcon Products | Company Product |
| 504 | Deviation Meters | Company Product |
| 505 | Dew Point Meter | Company Product |
| 506 | Dew Point Sensor | Company Product |
| 507 | Dew Point Transmitters | Company Product |
| 508 | Dewar Tanks | Company Product |
| 509 | Dewatering & Pumping Contractors | Company Product |
| 510 | Dewatering Contractors | Company Product |