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| All Patents in class 59/31 | |||||
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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 | |
| 94,441 | Aug. 31, 1869 | H. Reynolds | Apparatus for Welding Chain Links | chain making machines | |
| 749,912 | Jan. 19, 1904 | W.N. Appleton | Chain Maker's Power Hammer | chain making machines | |
| 831,912 | Sep. 25, 1906 | G.H. Wadsworth | Power Hammer | power hammers | |