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| Patents for Gladwin & Appleton | |||||
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| Number | Date | Patentee | Title | Type | |
| 17,541 | Jun. 09, 1857 | P.A. Gladwin | Tonguing and Grooving Hand-Plane | match planes | |
| 185,442 | Dec. 19, 1876 | P.A. Gladwin | Improvement in Match-Planes | plane fences | |