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All Patents in class 476/51 | |||||
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Number | Date | Patentee | Title | Type | |
142,504 | Sep. 02, 1873 | L.H. Olmsted | Improvement in the modes of regulating speed in machinery | sewing machines | |
159,589 | Feb. 09, 1875 | C. Lindner | Improvement in saw-mills | circular sawmills | |
585,384 | Jun. 29, 1897 | J.W. Hawkins | Drill-press | drill presses |