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| All Patents in class 251/214 | |||||
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| Number | Date | Patentee | Title | Type | |
| 79,679 | Jul. 07, 1868 | R.G. Packard | Globe Valve | valves | |
| 204,018 | May 21, 1878 | H.F. Frisbie | Puppet-Valve | steam engine valves | |
| 473,554 | Apr. 26, 1892 | E.P. Holly | Valve-Packing Device | plumber | |
| 1,169,485 | Jan. 25, 1916 | F.W. Hodges | Valve | valves | |
| 1,574,017 | Feb. 23, 1926 | D.S. Beattie | Valve | steam valves | |