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| All Patents in class 137/514.5 | |||||
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| Number | Date | Patentee | Title | Type | |
| 113,517 | Apr. 11, 1871 | B. Holly | Safety Valve | steam safety valves | |
| 234,157 | Nov. 09, 1880 | E. Wohlers | Injector | water injectors | |