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| Patents for Henry A. Pardoe | |||||
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| Number | Date | Patentee | Title | Type | |
| 698,315 | Apr. 22, 1902 | E.S. Shimer, H.A. Pardoe | Grinding-machine | cutter grinding machines | |
| 700,552 | May 20, 1902 | H.A. Pardoe, E.S. Shimer | Cutter-head bit | cutterheads | |