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| Patents for David F. Launy | |||||
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| Picture | Number | Date | Patentee | Title | |
| 437X | Mar. 21, 1803 | D.F. Launy | Improvement in time pieces | ||
| 1,568X | Aug. 23, 1811 | D.F. Launy | Electrophorus | ||
| 1,896X | Mar. 18, 1813 | D.F. Launy | Fire places | ||