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| Patents for Samuel Hall's Sons | |||||
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| Number | Date | Patentee | Title | Type | |
| 527,200 | Oct. 09, 1894 | C. Hall | Clamps Adapted to Ornamental and Polished Pipes | pipe jaw attachments for wrenches | |
| 533,295 | Jan. 29, 1895 | C. Hall | Pipe Wrench | wrench jaw components | |