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| All Patents in class 84/395 | |||||
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| Number | Date | Patentee | Title | Type | |
| 397,877 | Feb. 12, 1889 | E.W. Sylvan | Attachment for Musical Instruments | musical instruments | |
| 3,937,116 | Feb. 10, 1976 | L. Ramirez | Tenor trombone construction | musical instruments | |