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| Patents for I. H. Johnston | |||||
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| Number | Date | Patentee | Title | Type | |
| 807,396 | Dec. 12, 1905 | H.L. Newton | Wrench | quick adjust wrenches | |
| 807,397 | Dec. 12, 1905 | H.L. Newton | Pipe Wrench | quick adjust wrenches | |