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| Patents for William Finley Steinhoff | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-26,907 | Jun. 08, 1887 | W.F. Steinhoff | Machine for grinding planing machine knives | sharpening machines | |
| 420,022 | Jan. 21, 1890 | W.F. Steinhoff | Grinding-machine | sharpening machines | |