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| Patents for David F. Lee | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 959,221 | May 24, 1910 | A.B. Ireland, F.L. Ireland | Sawing machine | |
 | 1,186,990 | Jun. 13, 1916 | F.L. Ireland, A.B. Ireland | Log-controlling mechanism for sawing-machines | |