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| Patents for John C. MacGregor | |||||
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| Number | Date | Patentee | Title | Type | |
| 230,612 | Aug. 03, 1880 | C.M. Brown | Power-hammer | trip and helve hammers | |
| 240,515 | Apr. 26, 1881 | T.J. Henabery | Drag-sawing machine | drag saws | |
| 249,130 | Nov. 01, 1881 | G.D. Whitcomb | Rotary mining-drill | miner | |
| 256,351 | Apr. 11, 1882 | W.F. McGregor | Ratchet Monkey Wrench | ratchet wrenches | |
| 256,499 | Apr. 18, 1882 | D.C. Prescott | Frame for gang-saw mills | sawmills | |
| 257,757 | May 09, 1882 | D.C. Prescott | Setting mechanism for saw-mills | sawmill set works | |