| 841 | Dip Switch Soft Starters | Company Product |
| 842 | Dip Switches | Company Product |
| 843 | Direct Acting Solenoid Valves | Company Product |
| 844 | Direct Actuated Solenoid Valves | Company Product |
| 845 | Direct Carpentry | Company Product |
| 846 | Direct Check Valves | Company Product |
| 847 | Direct Current Drives | Company Product |
| 848 | Direct Drive Motors | Company Product |
| 849 | Direct Driven Air Compressors | Company Product |
| 850 | Direct Drives | Company Product |
| 851 | Direct Level Gauges | Company Product |
| 852 | Direct Mail Advertising | Company Product |
| 853 | Direct Mail Service | Company Product |
| 854 | Direct Operated 2 Port | Company Product |
| 855 | Direct Piping | Company Product |
| 856 | Direct Pressure Grit Blast Machines | Company Product |
| 857 | Direct Water Level Gauges | Company Product |
| 858 | Direction Finders | Company Product |
| 859 | Directional Control Valves | Company Product |
| 860 | Directional Controls | Company Product |
| 861 | Directional Power Meters | Company Product |
| 862 | Directional Valves | Company Product |
| 863 | Director Chairs | Company Product |
| 864 | Directory & Guide Publishers | Company Product |
| 865 | Directory Advertising | Company Product |
| 866 | Directory Boards & Systems | Company Product |
| 867 | Directory Listings | Company Product |
| 868 | Dirt Filters | Company Product |
| 869 | Dirt Resistance Paints | Company Product |
| 870 | Dirt Separators | Company Product |