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| Patents for Charles A. King | |||||
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| Number | Date | Patentee | Title | Type | |
| 50,600 | Oct. 24, 1865 | C.A. King, O.A. Smith | Improved Tool for Cutting Washers | ||
| 287,548 | Oct. 30, 1883 | C.A. King | Machine for Turning Gun Barrels | metal lathes | |
| 297,418 | Apr. 22, 1884 | C.A. King | Machine for turning Gun Barrels and Other Articles of Irregular Form | metal lathes | |