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| Patents for Howard C. Condit | |||||
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| Number | Date | Patentee | Title | Type | |
| 249,143 | Nov. 01, 1881 | H. Cottrell | Expanding Mandrel | mandrels and arbors | |
| 724,669 | Apr. 07, 1903 | H. Cottrell | Fence Maker's Tool | pliers | |