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| Patents for W. H. Leland & Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,011,183 | Dec. 12, 1911 | A.J. Gifford | Feed-lever connection for drills | drilling and boring | |
| 1,091,569 | Mar. 31, 1914 | A.J. Gifford | Driving mechanism for machine tools | drilling and boring | |