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| Patents for W. D. Lewis | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 52,244 | Jan. 23, 1866 | C. Forster | Improvement in Lathes for Turning Spherical Shot and Shell | |
 | 444,475 | Jan. 13, 1891 | J. Rockwell, A. Weed | Device for raising and lowering propellers | |