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| Patents for C. D. Howe | |||||
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| Number | Date | Patentee | Title | Type | |
| 403,455 | May 14, 1889 | E.M. Birdsall | Valve Gear | traction engine valve gear | |
| 406,262 | Jul. 02, 1889 | G.T. Chester | Barrel-hoop | cooper | |
| 410,161 | Sep. 03, 1889 | C. Hammelmann | Portable forge | blacksmith | |
| 415,439 | Nov. 19, 1889 | E.M. Birdsall | Traction Engine | steam traction engines | |