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| Patents for H. L. Mitchell | |||||
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| Number | Date | Patentee | Title | Type | |
| 47,597 | May 02, 1865 | W.R. Close | Improvement in hanging circular saws | circular saws | |
| 52,188 | Jan. 23, 1866 | J. Mutty | Improvement in feed-rollers to circular saws | tablesaw accessories | |
| 62,894 | Mar. 12, 1867 | G. Savage, Jr. | Planking Clamp | ||
| 94,504 | Sep. 07, 1869 | N.D. Beecroft, A.F. Noyes | Hand Weeder | ||