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| Patents for H. Leech | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,008,182 | Nov. 07, 1911 | R. Milne | Gearing for drill-presses | drill presses | |
| 1,063,572 | Jun. 03, 1913 | R. Milne | Feed for drill-spindles | drill presses | |