| 811 | Internal Combustion Engine Oil | Company Product |
| 812 | Internal Combustion Forklift | Company Product |
| 813 | Internal Combustion Trucks | Company Product |
| 814 | Internal Gear Pumps | Company Product |
| 815 | Internal Gears | Company Product |
| 816 | Internal Grinder | Company Product |
| 817 | Internal Grinding Machines | Company Product |
| 818 | Internal Honing Machines | Company Product |
| 819 | Internal Paintings | Company Product |
| 820 | Internal Sensor | Company Product |
| 821 | Internal Telephone Wiring For Telecommunications | Company Product |
| 822 | International | Company Product |
| 823 | International Procurement Office | Company Product |
| 824 | International Restaurants | Company Product |
| 825 | International School | Company Product |
| 826 | Internet Hosting | Company Product |
| 827 | Internet Marketing Service | Company Product |
| 828 | Internet Service Provider | Company Product |
| 829 | Interpretation Service | Company Product |
| 830 | Interval Timers | Company Product |
| 831 | Interview | Company Product |
| 832 | Intimate Wash | Company Product |
| 833 | Intravenous Solution Manufacturers | Company Product |
| 834 | Intrinsic Safety | Company Product |
| 835 | Intrinsic Safety Interface Controls | Company Product |
| 836 | Intrinsically Safe System | Company Product |
| 837 | Intrinsically Safe Wireless Pressure Sensors | Company Product |
| 838 | Intruder Alarms | Company Product |
| 839 | Intrusion Detection Systems | Company Product |
| 840 | Intrusion Detectors | Company Product |