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| Patents Granted on 1834-04-18 | |||||
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| Number | Date | Patentee | Title | Type | |
| 8,151X | Apr. 18, 1834 | A.S. Dawley | Throttle valves | ||
| 8,152X | Apr. 18, 1834 | W. Jones | Pressing out instead of hammering puddlers balls | ||
| 8,153X | Apr. 18, 1834 | S. Merrick | Wrench | quick adjust wrenches | |
| 8,154X | Apr. 18, 1834 | I. Tyson, Jr. | Blast furnace, heating and applying air | ||