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| All Patents in class 42/27 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,516X | May 21, 1811 | J.H. Hall, W. Thornton | Firearms | firearms | |
| 409 | Sep. 25, 1837 | C. Parkhurst | Improvement in many-chambered fire-arms | firearms | |