| 781 | Resistance Temperature Detectors | Company Product |
| 782 | Resistance Testers | Company Product |
| 783 | Resistance Thermometers | Company Product |
| 784 | Resistance Welding Electrodes | Company Product |
| 785 | Resistance Welding Equipment | Company Product |
| 786 | Resistance Wire | Company Product |
| 787 | Resistant Plastic Steel Corrosion | Company Product |
| 788 | Resistivity Meters | Company Product |
| 789 | Resistor | Company Product |
| 790 | Resistor Networks | Company Product |
| 791 | Resistors | Company Product |
| 792 | Resonator Crystals | Company Product |
| 793 | Resonators | Company Product |
| 794 | Resorcinol | Company Product |
| 795 | Resorts | Company Product |
| 796 | Resource Recovery | Company Product |
| 797 | Respirator | Company Product |
| 798 | Respirators | Company Product |
| 799 | Respirators Protections | Company Product |
| 800 | Respiratory Device | Company Product |
| 801 | Respiratory Protect | Company Product |
| 802 | Respiratory Protection | Company Product |
| 803 | Responsive Website Design | Company Product |
| 804 | Responsive Website Development | Company Product |
| 805 | Restaurant | Company Product |
| 806 | Restaurant Equipment & Supplies | Company Product |
| 807 | Restaurant Owners & Operators | Company Product |
| 808 | Restaurants | Company Product |
| 809 | Resting ECG | Company Product |
| 810 | Restore Body Lotion | Company Product |