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| Patents for A. G. Hague | |||||
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| Number | Date | Patentee | Title | Type | |
| 787,523 | Apr. 18, 1905 | G.M. Mason | Combined Pipe Wrench and Pliers | pliers | |
| CA-114,361 | Sep. 29, 1908 | C.V. Pollock | Wrench | quick adjust wrenches | |
| 912,372 | Feb. 16, 1909 | W.F. Gould | Balanced Slide Valve | steam engine valves | |
| 928,150 | Jul. 13, 1909 | E.M. Peterson | Pipe Wrench | pipe wrenches | |
| 992,350 | May 16, 1911 | W.F. Gould | Balanced Valve | steam engine valves | |
| 1,208,406 | Dec. 12, 1916 | C.O. Throp | Valve Remover | valve spring tools | |