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| Patents Granted on 1831-07-27 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,668X | Jul. 27, 1831 | G. Carriel | Machine for washing rags | ||
| 6,669X | Jul. 27, 1831 | J. Clyde | Running stones in flour mills | miller | |
| 6,670X | Jul. 27, 1831 | G. Heatwool | Machine for shaving hoops | cooper | |
| 6,671X | Jul. 27, 1831 | T.A. Irick | Brick press | brick maker | |
| 6,672X | Jul. 27, 1831 | P. Munch | Bee-hive and Management of Bees | apiary apparatus | |