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| All Patents in class 475/175 | |||||
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| Number | Date | Patentee | Title | Type | |
| 81,952 | Sep. 08, 1868 | H.F. Shaw | Improvement in lathe-heads | engine lathes | |
| 452,991 | May 26, 1891 | A.L. Colburn | Spindle feed for drill press | drill presses | |