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| Patents for Harry Pelphrey | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,693,020 | Nov. 02, 1954 | H. Pelphrey | Inserted Blade Hob | gear cutting tools | |
| 2,906,147 | Sep. 29, 1959 | H. Pelphrey | Roll for Forming Toothed Elements | gear making machines | |