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| Patents for Albert J. Gates | |||||
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| Number | Date | Patentee | Title | Type | |
| 691,339 | Jan. 14, 1902 | T.W. Capen, A.J. Gates | Rock or ore breaker | ore processing apparatus | |
| 705,749 | Jul. 29, 1902 | A.J. Gates | Cornish roll | ore processing apparatus | |
| 750,842 | Feb. 02, 1904 | W.H. Gelbaugh | Hinge Gage | butt gauges | |
| 1,211,431 | Jan. 09, 1917 | A.J. Gates | Lubricator | lubricators | |