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All Patents in class 73/532 | |||||
Number | Date | Patentee | Title | Type | |
172,116 | Jan. 11, 1876 | A.O. Whittemore, G.W. Hall | Engine-Governor | steam engine governors | |
574,320 | Dec. 29, 1896 | A. Giesler | Electric Water Wheel Governor | water wheel governors |