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| All Patents in class 84/409 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,164 | Jun. 19, 1847 | U.C. Hill, C.F. Hill | "Hilleno" | musical instruments | |
| 19,296 | Feb. 09, 1858 | C.F. Hill, U.C. Hill | "Hilleno" | musical instruments | |