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| Patents for H. P. Johnson | |||||
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| Number | Date | Patentee | Title | Type | |
| 489,454 | Jan. 10, 1893 | G.W. Bufford | Wrench | wrench jaw components | |
| 489,455 | Jan. 10, 1893 | J.E. Kitson, G.W. Bufford | Pipe Wrench | pipe wrenches | |