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| Patents for James A. Roberts | |||||
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| Number | Date | Patentee | Title | Type | |
| 294,914 | Mar. 11, 1884 | J.A. Roberts | Planer-matcher | matchers | |
| 308,801 | Dec. 02, 1884 | J.A. Roberts | Planing and matching machine | matchers | |
| 311,679 | Feb. 03, 1885 | J.A. Roberts | Cutter-head | cutterheads | |
| 322,324 | Jul. 14, 1885 | J.A. Roberts | Feed-roll | wood planers | |