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| All Patents in class 76/42 | |||||
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| Number | Date | Patentee | Title | Type | |
| 686,599 | Nov. 12, 1901 | E.R. Fellows | Machine for Grinding Gear Generating Cutters | tool grinders | |
| 2,459,233 | Jan. 18, 1949 | A.W. Mall | Saw sharpener | sharpening machines | |