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| All Patents in class 285/148.7 | |||||
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| Number | Date | Patentee | Title | Type | |
| 49,142 | Aug. 01, 1865 | J. Old | Pipe Coupling | pipe wrenches | |
| RE7,673 | May 08, 1877 | J. Old | Pipe-Coupling | auxiliary wrenches | |
| 487,829 | Dec. 13, 1892 | W.R. England | Pipe-Coupling | auxiliary wrenches | |