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| Patents for Charles Karp | |||||
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| Number | Date | Patentee | Title | Type | |
| 471,078 | Mar. 15, 1892 | J. Landwehr | Pipe Wrench | pipe wrenches | |
| 482,855 | Sep. 20, 1892 | A. Hormel, A. Tilton | Machine for decorating wood | wood compressing machines | |
| 511,049 | Dec. 19, 1893 | G.S. Junginger, A. Hormel | Electric-arc lamp | electric arc lamps | |