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| Patents for Henry Hartman | |||||
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| Number | Date | Patentee | Title | Type | |
| 278,951 | Jun. 05, 1883 | H. Hartman | Combination Can Opener | combination tools | |
| 989,035 | Apr. 11, 1911 | W.E. Harrison, R. Parker | Traction Engine | traction engine steering apparatus | |