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| Patents for Bickford Drill & Tool Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 489,317 | Jan. 03, 1893 | A. Mill | Tapping attachment for drills | tapping machines | |
| 543,395 | Jul. 23, 1895 | A. Mill | Drilling-machine | drill presses | |
| 792,842 | Jun. 20, 1905 | H.M. Norris | Drill | multiple spindle drill presses | |
| 883,118 | Mar. 24, 1908 | H.M. Norris | Arm for Radial Drills | radial drill presses | |