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| Patents for Joseph Williamson | |||||
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| Number | Date | Patentee | Title | Type | |
| 130,528 | Aug. 13, 1872 | L.R. Palmer | Improvement in machines for jointing staves | barrel making machines | |
| 130,739 | Aug. 20, 1872 | L.R. Palmer | Improvement in machines for jointing staves | barrel making machines | |