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| Patents for George J. Altham | |||||
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| Number | Date | Patentee | Title | Type | |
| 448,621 | Mar. 17, 1891 | G.J. Altham | Art of Obtaining Motive Power | hydraulic motors | |
| 662,181 | Nov. 20, 1900 | J. Beattie, Jr., G.J. Altham | Gas Engine | gas and gasoline engines | |