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| Patents for H. E. Quinn | |||||
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| Number | Date | Patentee | Title | Type | |
| 144,058 | Oct. 28, 1873 | J.C. Butterfield | Improvement in power-hammers | drop hammers | |
| 144,059 | Oct. 28, 1873 | J.C. Butterfield | Improvement in power-hammers | drop hammers | |