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| Patents for M. E. Halsey | |||||
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| Number | Date | Patentee | Title | Type | |
| 153,133 | Jul. 14, 1874 | C.S. Van Wagoner | Improvement in Clamps | bar and pipe clamps | |
| 153,206 | Jul. 21, 1874 | C.S. Van Wagoner | Improvement in Clamps | bar and pipe clamps | |