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| Patents for William E. Butler | |||||
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| Number | Date | Patentee | Title | Type | |
| 161,810 | Apr. 06, 1875 | J.H. Millspaugh | Improvement in machines for relishing tenons and cutting wedges | tenoning machines | |
| 226,276 | Apr. 06, 1880 | J.C. Butler, W.E. Butler | Wire-Barbing Machine | fence making machines | |
| 708,995 | Sep. 16, 1902 | W.E. Butler | Drilling-Machine | multiple spindle drilling heads | |