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| Patents for John Dwight | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,970X | Jun. 17, 1818 | S. Dwight, J. Dwight | Machine for sawing stone | stone cutting machines | |
| 3,917X | Jul. 29, 1824 | J. Dwight | Longitudinal bar for piano forte | music instrument maker | |