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| Patents for John Childs | |||||
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| Number | Date | Patentee | Title | Type | |
| 159,229 | Jan. 26, 1875 | H.C. Stouffer | Improved Pipe-Tongs | pipe tongs | |
| 166,428 | Aug. 03, 1875 | H.C. Stouffer | Improvement in Pipe-Wrenches | screw adjust wrenches | |
| 182,492 | Sep. 19, 1876 | H.C. Stouffer | Pipe-Wrench | pipe tongs | |