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| Patents for James H. Steen | |||||
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| Number | Date | Patentee | Title | Type | |
| 463,394 | Nov. 17, 1891 | J.H. Steen | Lathe-tool holder | lathe tool holders and tool posts | |
| 492,310 | Feb. 21, 1893 | J.H. Steen | Surface Cutting Tool | lathe tools | |