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| All Patents in class 84/384 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,968 | Dec. 25, 1849 | C.G. Christman | Flute | musical instruments | |
| 76,389 | Apr. 07, 1868 | T. Berteling | Improvement in flutes | musical instruments | |