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| All Patents in class 408/51 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 86,176 | Jan. 26, 1869 | A.O. Neal | Boring and mortising machine | |
| 410,784 | Sep. 10, 1889 | J. Colville | Machine for boring and trimming slats | ||
 | 446,856 | Feb. 24, 1891 | J. Faske | Machine for drilling the tires and fellies of wheels of road-vehicles | |
 | 629,294 | Jul. 18, 1899 | G.H. Heady | Lock- mortising machine | |
 | 1,679,506 | Aug. 07, 1928 | A. Storm | Cylinder-renewing machine | |