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| Patents for Francis M. Hay | |||||
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| Number | Date | Patentee | Title | Type | |
| 461,529 | Oct. 20, 1891 | F.M. Hay | Auger-Handle | auger handles | |
| 526,314 | Sep. 18, 1894 | F.M. Hay | Bit-stock (with fast-acting rotary chuck) | ||