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| Patents Granted on 1852-05-25 | |||||
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| Number | Date | Patentee | Title | Type | |
| 8,966 | May 25, 1852 | J.B. Chambers | Mortising-machine | mortising machines | |
| 8,976 | May 25, 1852 | D. Woodcock | Machine for jointing staves | barrel making machines | |