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| Patents for W. H. H. Knight | |||||
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| Number | Date | Patentee | Title | Type | |
| 221,900 | Nov. 18, 1879 | C.M. Miller | Traction Engine | steam traction engines | |
| 249,912 | Nov. 22, 1881 | G.M. Smith, M.L. Edwards | Tuyere | blacksmith | |
| 338,404 | Mar. 23, 1886 | G.F. Hall | Hammer | nail holding | |