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| Patents for F. D. Butterfield | |||||
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| Number | Date | Patentee | Title | Type | |
| 231,387 | Aug. 17, 1880 | L.A. Young | Device for cutting axles | wagon maker | |
| CA-12,068 | Dec. 01, 1880 | L.A. Young | Improvement on axle cutters | wagon maker | |