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| Patents for Boynton & Plummer | |||||
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| Number | Date | Patentee | Title | Type | |
| 135,613 | Feb. 04, 1873 | E.J. Worcester | Improvement in drilling-machines | drill presses | |
| 209,646 | Nov. 05, 1878 | T.F. Carver, G.M. Coburn, E.N. Boynton | Improvement in metal-drilling machines | drill presses | |
| 274,026 | Mar. 13, 1883 | O. Plummer | Post for drilling machines | woodworking post drills | |
| 480,907 | Aug. 16, 1892 | J. Kindred | Drilling-machine | drill presses | |
| 520,142 | May 22, 1894 | A. Goddard | Drilling-machine | drill presses | |