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| Patents Granted on 1825-04-07 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,077X | Apr. 07, 1825 | F.H. Smith | Musical glasses, called grand harmonicon | musical instruments | |
| 4,078X | Apr. 07, 1825 | C. Blood | Fire places and chimneys | ||