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| Patents for James A. Aiken | |||||
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| Number | Date | Patentee | Title | Type | |
| 427,821 | May 13, 1890 | J.A. Aiken | Combined chuck and bit | cutters | |
| 476,220 | May 31, 1892 | J.A. Aiken | Device for forming the ends of handles | tool making machines | |