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| All Patents in class 384/388 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 89,652 | May 04, 1869 | J. Goodrich, H.J. Colburn | Improvement in self-oiling pulleys | |
 | 134,250 | Dec. 24, 1872 | W.W. Carey | Improvement in loose pulleys | |