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| All Patents in class 198/840 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 31,779 | Mar. 26, 1861 | O.H. Burdett | Removing sawdust as it is formed | |
 | 263,699 | Sep. 05, 1882 | J.D. Heebner | Raking Attachment for Harvester Binders | |
 | 562,756 | Jun. 23, 1896 | C.W. Blood | Chain-feed for woodworking machines | |
 | 1,809,054 | Jun. 09, 1931 | C.L. Mattison | Chain feed drive | |