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| Patents for William Humphreys | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,588X | Oct. 04, 1811 | W. Humphreys | Machine for drawing and spinning wool | spinner | |
| 93,824 | Aug. 17, 1869 | W. Humphreys | Improved Compound Tool for Water and Gas Pipes | pipe reamers | |
| 362,278 | May 03, 1887 | W. Humphreys | Pipe and Nut Wrench | pipe wrenches | |
| 1,422,576 | Jul. 11, 1922 | W. Humphreys | Measuring Gauge | measurement gauges | |