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| Patents for Frederick Thomas | |||||
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| Number | Date | Patentee | Title | Type | |
| 80,917 | Aug. 11, 1868 | C.O. Cook | Improvement in Coopers' Croze | crozes | |
| 169,059 | Oct. 19, 1875 | F. Thomas | Coffee Roaster | coffee roasters | |
| 169,498 | Nov. 02, 1875 | F. Thomas | Coffee Roaster | coffee roasters | |