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| Patents for D. B. Hanson | |||||
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| Number | Date | Patentee | Title | Type | |
| 333,664 | Jan. 05, 1886 | T.W. Peck | Saw-mill carriage | sawmill carriages | |
| 433,681 | Aug. 05, 1890 | R. Schofield, G.M. Hinkley | Offsetting saw-mill carriage | sawmill carriages | |