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| All Patents in class 68/15 | |||||
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| Number | Date | Patentee | Title | Type | |
| 62,139 | Feb. 19, 1867 | J. Barraclough, J. Knowles, A. Knowles | Improvement in apparatus for extracting wood from mixed articles and fabrics | specialty woodworking machines | |
| 128,594 | Jul. 02, 1872 | A.N. Cole | Improvement in apparatus for separating oil from cotton-waste, &c. | ||