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| Patents for R. S. Ferguson | |||||
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| Number | Date | Patentee | Title | Type | |
| 334,538 | Jan. 19, 1886 | W.J. Muncaster | Lathe for Turning Shafting | engine lathes | |
| 439,336 | Oct. 28, 1890 | G. Zitlow | Combination Tool | combination tools | |
| 441,844 | Dec. 02, 1890 | G.W. Hubbard | Nippers | pliers | |