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| Patents for Amy Denman | |||||
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| Number | Date | Patentee | Title | Type | |
| 945,571 | Jan. 04, 1910 | R. Milne | Safety-clutch for drill-feeds | drill presses | |
| 981,870 | Jan. 17, 1911 | R. Milne | Trip mechanism for drilling-machines | drill presses | |