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| Patents for Philip J. Harrah | |||||
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| Number | Date | Patentee | Title | Type | |
| 566,170 | Aug. 18, 1896 | P.J. Harrah | Combined vise and drill | combined anvil vises and drills | |
| 652,674 | Jun. 26, 1900 | P.J. Harrah | Combined Vise and Drill | vises | |