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| Patents for Isaac Allard | |||||
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| Number | Date | Patentee | Title | Type | |
| 58,933 | Oct. 16, 1866 | I. Allard | Wood-sawing machine | drag saws | |
| 80,583 | Aug. 04, 1868 | I. Allard | Improvement in screw-drivers | spiral screwdrivers | |
| 157,087 | Nov. 24, 1874 | I. Allard | Improvement in screw-drivers | ||