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| All Patents in class 198/600 | |||||
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| Number | Date | Patentee | Title | Type | |
| 238,220 | Mar. 01, 1881 | E.T. Davies | Lumber-sorter | sawmill accessories | |
| 732,649 | Jun. 30, 1903 | H.A. Mitchell | Sawmill | sawmill accessories | |
| 3,486,602 | Dec. 30, 1969 | W.H. Zuercher | Transfer system overdrop with lumber retarder | woodworking machine stockfeeding mechanisms | |