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| Patents Granted on 1861-06-18 | |||||
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| Number | Date | Patentee | Title | Type | |
| 32,571 | Jun. 18, 1861 | G. Lane | Ruler | rules | |
| 32,583 | Jun. 18, 1861 | C.T. Porter | Marine governor | steam engine governors | |
| FR-50,128 | Jun. 18, 1861 | H. Giffard | Economical very high pressure steam engine | steam engines | |