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| Patents Granted on 1813-04-29 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,913X | Apr. 29, 1813 | J.F. Hummel | Varnish of elastic gum to render water-proof, and for many other uses | ||
| 1,914X | Apr. 29, 1813 | R.V. Thorn | Press for hay | hay or straw presses | |