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| Patents for Doran Bros. | |||||
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| Number | Date | Patentee | Title | Type | |
| 293,289 | Feb. 12, 1884 | H.C. Walter, E.P. Walter | Metal Planing Machine | metal planers | |
| 301,279 | Jul. 01, 1884 | C.H. Reid | Hat Finishing Lathe | hat making machines | |
| 308,715 | Dec. 02, 1884 | H.C. Walter, E.P. Walter | Metal Planing Machine | metalworking machine mechanisms | |
| 421,514 | Feb. 18, 1890 | C.H. Reid | Hat Finishing Lathe | hat making machines | |