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| Patents for Henry Markel | |||||
| Number | Date | Patentee | Title | Type | |
| 546,672 | Sep. 24, 1895 | H. Markel | Ratchet Wrench | ratchet wrenches | |
| CA-52,662 | Jun. 17, 1896 | H. Markel | Ratchet Wrench | ratchet wrenches | |