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| Patents for R. C. Wrenshall | |||||
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| Number | Date | Patentee | Title | Type | |
| 98,711 | Jan. 11, 1870 | L. Rogers | Horse Hay Fork | hay or straw forks | |
| 106,349 | Aug. 16, 1870 | G.M. Evans | Woodworker's Leg Vise | leg vises | |
| 116,655 | Jul. 04, 1871 | G. Westinghouse, Jr. | Improvement in valve devices for steam-power air-brake couplings | railroad car brakes | |
| RE7,673 | May 08, 1877 | J. Old | Pipe-Coupling | auxiliary wrenches | |