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| Patents for Charles F. Geyer | |||||
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| Number | Date | Patentee | Title | Type | |
| 263,991 | Sep. 05, 1882 | C.A. Svensson | Machine for bending rings | jeweler | |
| 275,913 | Apr. 17, 1883 | J.W. Holmes | Solar Theodite | surveyor | |
| 312,530 | Feb. 17, 1885 | R. Triller | Tenoning and boring machine | tenoning machines | |