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| Patents for John I. Munroe | |||||
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| Number | Date | Patentee | Title | Type | |
| 101,730 | Apr. 12, 1870 | E.F. Harrington | Improvement in cork-cutting machines | bung making machines | |
| 101,903 | Apr. 12, 1870 | J.I. Munroe | Improvement in bung-cutter | cutters | |