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| All Patents in class 246/182R | |||||
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| Number | Date | Patentee | Title | Type | |
| 818,711 | Apr. 24, 1906 | W.N. Rumely | Steam Engine Governor | traction engine governors | |
| 879,847 | Feb. 25, 1908 | T.R. Bell | Safety controlling mechanism | electric railroads | |