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| Patents for Dempsy B. Hanson | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 306,826 | Oct. 21, 1884 | D.B. Hanson | Band-saw mill | |
 | 334,818 | Jan. 26, 1886 | S. Stephens, D.B. Hanson | Band-saw guide | |
 | 684,931 | Oct. 22, 1901 | D.B. Hanson | Sawmill set-works | |