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| All Patents in class 91/342 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,589 | Jul. 10, 1849 | R. Porter | Arrangement and method of working the valves of auxiliary engines for feeding boilers | solid fuel stokers | |
| 385,580 | Jul. 03, 1888 | G.B. Snow | Steam Bell Ringer | steam apparatus | |