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| Patents Granted on 1834-04-30 | |||||
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| Number | Date | Patentee | Title | Type | |
| 8,176X | Apr. 30, 1834 | W.J. Spence | Self inking machine for a hand printing press | printing presses | |
| 8,177X | Apr. 30, 1834 | P. Atwell | Extracting fur from skins and manufacturing it into yarn | ||