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| All Patents in class 74/33 | |||||
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| Number | Date | Patentee | Title | Type | |
| 206,424 | Jul. 30, 1878 | O.R. Chapman | Metal-Planing Machine | metal planers | |
| 495,350 | Apr. 11, 1893 | C. Loetscher | Chain mortiser | mortising machines | |
| 584,495 | Jun. 15, 1897 | W.W. Doolittle | Planing-machine mechanism | metal planers | |
| 2,483,535 | Oct. 04, 1949 | K.F. Gallimore | Reciprocatory Drive for Machine Tools | metalworking power transmission | |