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| Patents for James E. Howland | |||||
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| Number | Date | Patentee | Title | Type | |
| 258,067 | May 16, 1882 | J.E. Howland, W.M. Howland | Bench-dog | workbench devices | |
| 850,835 | Apr. 16, 1907 | J.E. Howland | Attachment for Traction Engines | steam traction engines | |