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| All Patents in class 984/150 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,485,822 | Oct. 25, 1949 | M. Goldrich | Drum brushes, or jazz drum switches | musical instruments | |
| 2,485,823 | Oct. 25, 1949 | M. Goldrich | Drum brushes, or jazz drum switches | musical instruments | |