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| Patents Granted on 1880-09-07 | |||||
| Number | Date | Patentee | Title | Type | |
| 231,890 | Sep. 07, 1880 | H.K. Austin | File Holder | file holders | |
| 232,062 | Sep. 07, 1880 | H. Reily | Saw filing machine | saw sharpening machines | |
| 232,063 | Sep. 07, 1880 | H. Reily | Saw filing machine | saw sharpening machines | |
| 232,094 | Sep. 07, 1880 | H.J. Williams | Bench-hook | workbench devices | |