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| Patents for Jos. H. Blackwood | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 419,571 | Jan. 14, 1890 | F.S. Thring | Improvements in Ratchet Wrenches | |
 | 440,889 | Nov. 18, 1890 | A. Chainey | Wrench | |
 | 492,834 | Mar. 07, 1893 | G.W. Porter | Pipe Wrench | |