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| All Patents in class 138/26 | |||||
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| Number | Date | Patentee | Title | Type | |
| 97,767 | Dec. 14, 1869 | J.W. Douglas | Improvement in pumps | household hand pumps | |
| 424,040 | Mar. 25, 1890 | J.H. Vaile | Press for oil-seeds | seed or nut oil apparatus | |
| 643,876 | Feb. 20, 1900 | F. Lane | Pressure Gage | vacuum and pressure gauges | |