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| Patents for Harry C. Guion | |||||
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| Number | Date | Patentee | Title | Type | |
| 870,143 | Nov. 05, 1907 | V.J. Wahlstrom | Chuck | drill chucks | |
| 978,521 | Dec. 13, 1910 | V.J. Wahlstrom | Oil-cup | oil cups | |