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| Patents for Levi K. Mansfield | |||||
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| Number | Date | Patentee | Title | Type | |
| 318,387 | May 19, 1885 | S.T. Newman | Lathe-chuck | metal lathe chucks | |
| 344,978 | Jul. 06, 1886 | I. Morse | Pipe Wrench | pipe wrenches | |