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| Patents for Nicholson File Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 198,777 | Jan. 01, 1878 | W.T. Nicholson | File Handle | tool handles | |
| 200,218 | Feb. 12, 1878 | W.T. Nicholson | File Cleaner | files | |
| 204,596 | Jun. 04, 1878 | W.T. Nicholson | Improvement in File Holders | files | |