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| Patents for A. C. Norton | |||||
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| Number | Date | Patentee | Title | Type | |
| 434,266 | Aug. 12, 1890 | A.Y. Gray, L. Gray | Brake for horse-powers or speed-regulators | animal powered apparatus | |
| 448,957 | Mar. 24, 1891 | L. Gray, A.Y. Gray | Attachment for the separators of thrashing-machines | corn and grain separators | |