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| Patents for J. N. Marshall | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 96,224 | Oct. 26, 1869 | J.P. Grosvenor | Improvement in method of adjusting circular saws | |
 | 123,562 | Feb. 13, 1872 | J.P. Grosvenor | Improvement in lubricating-boxes and bearings for upright shafts | |
 | RE4,763 | Feb. 20, 1872 | J.P. Grosvenor | Improvement in circular-saw mills | |
 | 176,785 | May 02, 1876 | J. Holt | Improvement in saw-tables | |