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| Patents for E. J. Skinner | |||||
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| Number | Date | Patentee | Title | Type | |
| 454,074 | Jun. 16, 1891 | J.N. Skinner | Drill-chuck | drill press chucks | |
| 460,601 | Oct. 06, 1891 | J.N. Skinner | Lathe-Chuck | metal lathe chucks | |
| 463,392 | Nov. 17, 1891 | J.N. Skinner | Lathe-chuck | metal lathe chucks | |
| 508,533 | Nov. 14, 1893 | J.N. Skinner | Face-plate jaw | metal lathe chucks | |
| 1,053,530 | Feb. 18, 1913 | A.A. North | Drill-chuck | drill chucks | |