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| Patents for Jonathan Sizer | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,594X | Oct. 15, 1811 | J. Sizer | Circular boilers | stationary boilers | |
| 1,605X | Nov. 06, 1811 | J. Sizer | Machine for basoning, hardening and steaming hats | trade specific | |
| 1,821X | Oct. 21, 1812 | R. Sizer, J. Sizer | Weaving feather cloth | weaver | |