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| Patents for Otto A. Miller | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,387,427 | Aug. 09, 1921 | O.A. Miller | Wheel-Dressing Tool | grinder dressers | |
| 1,745,701 | Feb. 04, 1930 | O.A. Miller | Cutter and Shaper Head | cutterheads | |