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