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| Patents for R. L. Stewart | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 41,544 | Feb. 09, 1864 | R.L. Stewart | Improvement in method of hanging saws | |
 | 63,114 | Mar. 19, 1867 | R.L. Stewart | Improvement in sawmills | |
 | 444,450 | Jan. 13, 1891 | H. Marshall | Wrench | |