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| Patents for Clarke & Utter | |||||
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| Number | Date | Patentee | Title | Type | |
| 43,095 | Jun. 14, 1861 | O. Clarke | Cider Mill | cider mills | |
| 35,081 | Apr. 29, 1862 | I. Utter, O. Clarke | Improved Evaporator for Saccharine Juices | sugar cane apparatus | |
| 61,516 | Jan. 29, 1867 | O. Clarke | Cane Mill | sugar cane apparatus | |
| 171,777 | Jan. 04, 1876 | M.L. Gorham, I. Utter, O. Clarke | Horse-Rake | rakes | |
| 178,909 | Jun. 20, 1876 | I. Utter, O. Clarke | Rock-Drilling Machine | stone boring and drilling machines | |