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| Patents for Charles F. Roper | |||||
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| Number | Date | Patentee | Title | Type | |
| 263,357 | Aug. 29, 1882 | C.F. Roper | Metal Screw Machine | screw machines | |
| 263,358 | Aug. 29, 1882 | C.F. Roper | Metal Screw Machine | screw machines | |