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| Patents for William H. Downing | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 93,688 | Aug. 17, 1869 | W.H. Downing | Pipe Wrench | |
 | 122,308 | Jan. 02, 1872 | W.H. Downing | Improvement in Pipe Tongs | |
 | 729,294 | May 26, 1903 | W.H. Downing | Tubing Tongs | |