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| Patents for Ralph P. Thompson | |||||
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| Number | Date | Patentee | Title | Type | |
| 374,016 | Nov. 29, 1887 | R.P. Thompson | Steering Gear for Traction Engines | traction engine steering apparatus | |
| 862,216 | Aug. 06, 1907 | R.P. Thompson | Bearing | ||
| 1,034,535 | Aug. 06, 1912 | R.P. Thompson | Portable drill, known as hand or breast drill | eggbeater drills | |