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| Patents for Elbridge G. Mayhew | |||||
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| Number | Date | Patentee | Title | Type | |
| 27,261 | Feb. 21, 1860 | E.M. Smith | Improvement in molding machines | molders | |
| AI287 | Jun. 26, 1860 | E.M. Smith | Improvement in molding machines | molders | |