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| Patents Granted on 1825-10-01 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,222X | Oct. 01, 1825 | G. Davis | Plough | plows | |
| 4,223X | Oct. 01, 1825 | G. Pollard, T. Norcross | Mode of compressing and smoothing unburnt bricks | brick maker | |
| 4,224X | Oct. 01, 1825 | A. Planton | Mode of preventing the decay of ships | boats and ships | |