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| Patents for John Bopp | |||||
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| Number | Date | Patentee | Title | Type | |
| 420,569 | Feb. 04, 1890 | J. McCort, J. Bopp | Cutter-head for planers | cutterheads | |
| 437,329 | Sep. 30, 1890 | J. Bopp | Machine Planer Head | wood planers | |