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| Patents for Walter D. Oliver | |||||
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| Number | Date | Patentee | Title | Type | |
| 132,173 | Oct. 15, 1872 | J. Neuberger | Improvements in Trip-Hammers | trip and helve hammers | |
| 135,520 | Feb. 04, 1873 | O.C. Burdict | Cutter Head for Pointing Bolts | metal lathe accessories and attachments | |