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| All Patents in class 74/89.14 | |||||
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| Number | Date | Patentee | Title | Type | |
| 487,775 | Dec. 13, 1892 | F.H. Richards | Duplex feed mechanism | milling machines | |
| 2,514,314 | Jul. 04, 1950 | J.A. Denton | Lift mechanism | sawmill accessories | |