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| Patents for J. C. Hoadley Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 134,548 | Jan. 07, 1873 | J.C. Hoadley | Check-Valves | |
| 143,574 | Oct. 14, 1873 | J.C. Hoadley | Dead-Lights for Steam-Boilers | ||
| 144,098 | Oct. 28, 1873 | J.C. Hoadley | Governors for Steam-Engines | ||
| 148,560 | Mar. 17, 1874 | J.C. Hoadley | Governors for Steam-Engines | ||
 | 164,942 | Jun. 29, 1875 | G.C. Sims | Governor for Steam Engines | |