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| Patents Granted on 1842-09-30 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,790 | Sep. 30, 1842 | J. Dominis | Instrument for Measuring Sails | shipwright | |
| 2,791 | Sep. 30, 1842 | C.D. Wright | Tail-block of sawmills for setting logs | sawmill tailblocks | |