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| Patents for John B. Slough | |||||
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| Number | Date | Patentee | Title | Type | |
| D34,881 | Jul. 30, 1901 | H.B. Keiper | Design for a stand for rotary blowers and forges | forges | |
| D34,884 | Jul. 30, 1901 | H.B. Keiper | Design for a gear-train casing for rotary blowers | forge blowers | |
| 697,629 | Apr. 15, 1902 | H.B. Keiper | Combined gearing and casing therefor | forge blowers | |