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| Patents for Andrew W. Duty | |||||
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| Number | Date | Patentee | Title | Type | |
| 248X | May 08, 1799 | A.W. Duty | New Method to Cut Clay for Tile | tile cutting machines | |
| 7,466X | Mar. 07, 1833 | A.W. Duty | Striking bricks | brick maker | |