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| Patents for John F. W. Erdmann | |||||
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| Number | Date | Patentee | Title | Type | |
| 17,921 | Aug. 04, 1857 | J.F. Erdmann | Scraper Plane | scraper planes | |
| 140,905 | Jul. 15, 1873 | J.F. Erdmann | Improvement in cutter-heads | cutterheads | |