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| Patents for H. H. Hill | |||||
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| Number | Date | Patentee | Title | Type | |
| 265,236 | Oct. 03, 1882 | T.W. Boyle | Wrench | pipe and nut combination wrenches | |
| 389,666 | Sep. 18, 1888 | B. Reagan | Improvements in Pipe Tongs | pipe tongs | |