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| Patents for Charles N. Campbell | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,209,513 | Dec. 19, 1916 | E.C. O'Hair, A. Storm | Boring-machine | automotive tools | |
| 1,235,395 | Jul. 31, 1917 | A. Storm | Filter | automotive tools | |