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| Patents for David Dewey | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,083X | Jun. 27, 1809 | D. Dewey | Shearing cloth | ||
| 2,170X | Jul. 05, 1814 | D. Dewey | Distilling by steam | ||
| 2,235X | Dec. 07, 1814 | D. Dewey | Vibrating shearing machine | ||