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| All Patents in class D23/232 | |||||
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| Picture | Number | Date | Patentee | Title | |
| D1,193 | Jan. 24, 1860 | B. Holly | Design for Piston Pump | ||
| D1,256 | Jun. 19, 1860 | B. Holly | Improved Design for Pumps | ||
| D2,293 | Apr. 03, 1866 | B.S. Nichols | Design for a pump | ||