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| Patents for Fred E. Dorr | |||||
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| Number | Date | Patentee | Title | Type | |
| 594,632 | Nov. 30, 1897 | N. Lombard | Speed Regulator | steam engine governors | |
| 791,263 | May 30, 1905 | F.A. Walden, R.A. Hammond | Wrench | quick adjust wrenches | |