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| Patents for Baker Bros. | |||||
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| Number | Date | Patentee | Title | Type | |
| 477,737 | Jun. 28, 1892 | L.H. Colburn | Slotting Machine | key seating machines | |
| 599,054 | Feb. 15, 1898 | L.H. Colburn | Machine for Cutting Slots | key seating machines | |
| 742,291 | Oct. 27, 1903 | L.H. Colburn | Upright Tapping and Boring Machine | drill presses | |
| 748,844 | Jan. 05, 1904 | L.H. Colburn | Slotting Machine | key seating machines | |