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| All Patents in class 408/31 | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,400X | Jan. 31, 1833 | M.D. Whipple | Forming axe eyes | tool making machines | |
| 106,120 | Aug. 09, 1870 | W.W. Carey, G.W. Harris | Improvement in boring-machine | drilling and boring | |
| 446,856 | Feb. 24, 1891 | J. Faske | Machine for drilling the tires and fellies of wheels of road-vehicles | wagon maker | |
| 766,723 | Aug. 02, 1904 | C.C. Newton | Drilling and Tapping Machine | tapping machines | |