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| Patents for Aldus C. Higgins | |||||
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| Number | Date | Patentee | Title | Type | |
| 664,319 | Dec. 18, 1900 | M.B. Hill | Oil-stone | ||
| 791,159 | May 30, 1905 | C.H. Norton | Abrasive-wheel mounting | bench or pedestal grinders | |