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| Patents for William L. Sweetland | |||||
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| Number | Date | Patentee | Title | Type | |
| 211,943 | Feb. 04, 1879 | W.L. Sweetland | Improvement in lathe-chucks | metal lathe chucks | |
| RE9,734 | May 31, 1881 | W.L. Sweetland | Lathe-chuck | metal lathe chucks | |
| 347,395 | Aug. 17, 1886 | W.L. Sweetland | Lathe Chuck | metal lathe chucks | |