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| All Patents in class 232/4R | |||||
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| Number | Date | Patentee | Title | Type | |
| 156,365 | Oct. 27, 1874 | B.G. Martin | Wrenches | quick adjust wrenches | |
| 164,251 | Jun. 08, 1875 | J. Bachelder | Improvement in machines for cutting bungs | bung making machines | |