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| All Patents in class 251/357 | |||||
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| Number | Date | Patentee | Title | Type | |
| 39,852 | Sep. 08, 1863 | W. Watts | Steam Pump | steam pumps | |
| 85,749 | Jan. 12, 1869 | C.H. Mellor | Improved method of securing rubber rings or disks to the door of vats, &c. | ||
| 556,037 | Mar. 10, 1896 | C.W. Weiss | Valve | internal combustion engine valves | |
| 1,226,040 | May 15, 1917 | N.W. Whitbeck | Valve | valves | |