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| Patents for Frank B. Richards | |||||
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| Number | Date | Patentee | Title | Type | |
| 105,543 | Jul. 19, 1870 | J.A. Borthwick | Improvement in Machine for Sharpening Saws | annular saws | |
| 108,305 | Oct. 11, 1870 | C. Van Haagen | Improved Planing Mechanism | metal planers | |
| 117,365 | Jul. 25, 1871 | J.G. Baker | Improvement in machines for cutting tobacco | tobacco machinery | |
| 120,947 | Nov. 14, 1871 | A.B. Davis | Improvement in Duplex Wrenches | wrench jaw components | |