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