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| Patents for Charles F. Nichols | |||||
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| Number | Date | Patentee | Title | Type | |
| 386,651 | Jul. 24, 1888 | C.F. Nichols | Attachment for Squares | squares | |
| 590,368 | Sep. 21, 1897 | C.B. Ring, A.H. Harriman | Claw Hammer | hammers | |