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| Patents for James C. Steen | |||||
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| Number | Date | Patentee | Title | Type | |
| 654,857 | Jul. 31, 1900 | P.G. March, J.C. Steen | Shaping Machine | metal shapers | |
| 679,063 | Jul. 23, 1901 | C. Seybold, J.C. Steen | Shaping Machine | metal shapers | |
| 791,225 | May 30, 1905 | J.C. Steen | Shaping Machine | metal shapers | |
| 807,214 | Dec. 12, 1905 | J.C. Steen | Shaping-machine | metal shapers | |
| 807,404 | Dec. 12, 1905 | J.C. Steen | Shaping-machine | metal shapers | |
| 949,735 | Feb. 15, 1910 | N.B. Chace, J.C. Steen | Shaping-machine | metal shapers | |