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| All Patents in class 248/351 | |||||
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| Number | Date | Patentee | Title | Type | |
| 144,965 | Nov. 25, 1873 | J.W. Douglas | Improvement in pumps | household hand pumps | |
| 425,486 | Apr. 15, 1890 | J.B. Bennett | Adjusting device | sanding machines | |