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| Patents for Norton Emery Wheel Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 521,836 | Jun. 26, 1894 | O.S. Walker | Bearing for emery-wheels | |
 | 664,319 | Dec. 18, 1900 | M.B. Hill | Oil-stone | |
 | 839,080 | Dec. 18, 1906 | C.O. Smith | Machine for grinding ball bearing races | |