| 481 | Detroit Diesel 8v92ta Diesel Engine | Company Product |
| 482 | Detroit Diesel Engines | Company Product |
| 483 | Detroit Diesel Exhaust Valves | Company Product |
| 484 | Detroit Diesel Filters | Company Product |
| 485 | Detroit Diesels | Company Product |
| 486 | Devcon Products | Company Product |
| 487 | Deviation Meters | Company Product |
| 488 | Dew Point Meter | Company Product |
| 489 | Dew Point Sensor | Company Product |
| 490 | Dew Point Transmitters | Company Product |
| 491 | Dewar Tanks | Company Product |
| 492 | Dewatering & Pumping Contractors | Company Product |
| 493 | Dewatering Contractors | Company Product |
| 494 | Dewatering Drainage Pumps | Company Product |
| 495 | Dewatering Pumps | Company Product |
| 496 | Dewpoint Meters | Company Product |
| 497 | Dewval 838 | Company Product |
| 498 | Dexron III | Company Product |
| 499 | Dexron VI | Company Product |
| 500 | Diabetes | Company Product |
| 501 | Diabetic | Company Product |
| 502 | Diagnostic Reagents | Company Product |
| 503 | Diagnostic Tools | Company Product |
| 504 | Diagonal Brace | Company Product |
| 505 | Diagonal Packings | Company Product |
| 506 | Diagonal Pliers | Company Product |
| 507 | Dial Comparators | Company Product |
| 508 | Dial Gauges | Company Product |
| 509 | Dial Indicators | Company Product |
| 510 | Dial Protractors | Company Product |