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| Patents Granted on 1819-08-30 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,128X | Aug. 30, 1819 | G. Geib | Teaching Music by Means of a Dumb Instrument | musical instruments | |
| 3,129X | Aug. 30, 1819 | C. Pommer | Producing the swell in musical stringed instruments | music instrument maker | |