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| Patents for Frederick Brewster | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,124X | May 24, 1828 | F. Brewster, J. Johnson | Press for making oil out of flaxseed | flax and hemp machines | |
| 7,387X | Jan. 24, 1833 | F. Brewster | Polyshare | ||