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| Patents for E. R. Cook | |||||
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| Number | Date | Patentee | Title | Type | |
| 13,780 | Nov. 13, 1855 | R. Cook | Dies for Making Cook's Bits | making drills and augers | |
| 33,694 | Nov. 12, 1861 | R. Cook | Improved Fan-Blower | ||
| 34,243 | Jan. 28, 1862 | R. Cook | Improved Lunch-Box | ||
| 81,069 | Aug. 18, 1868 | R. Cook | Spoon bit with lead screw | spoon bits | |