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| Patents for George G. Hadley | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-17,698 | Sep. 21, 1883 | J. Houlehan | Wrenches | quick adjust wrenches | |
| 289,347 | Nov. 27, 1883 | J. Houlehan | Wrench | quick adjust wrenches | |