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| Patents for Henry C. Johnson | |||||
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| Number | Date | Patentee | Title | Type | |
| 461,719 | Oct. 20, 1891 | P. Stovall | Saw-mill feed | sawmill feed works | |
| 550,275 | Nov. 26, 1895 | H.C. Johnson | Coffee Roaster | coffee roasters | |