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| Patents Granted on 1842-07-08 | |||||
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| Number | Date | Patentee | Title | Type | |
| RX-43 | Jul. 08, 1842 | T. Allen | Improvement in Machines for Making Coopers' Rivets and Other Rivets | rivet making machines | |
| 2,708 | Jul. 08, 1842 | R. Rich | Water Wheel | water wheels | |