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| Patents for Walter W. Gray | |||||
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| Number | Date | Patentee | Title | Type | |
| 287,193 | Oct. 23, 1883 | J.L. Taylor | Pipe Wrench | pipe wrenches | |
| CA-18,115 | Nov. 17, 1883 | J.L. Taylor | Improvements in Pipe Wrenches | pipe wrenches | |