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| Patents Granted on 1838-01-20 | |||||
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| Number | Date | Patentee | Title | Type | |
| 572 | Jan. 20, 1838 | J. Badger | Machine for Boring Framing-Timber | portable timber mortisers | |
| 573 | Jan. 20, 1838 | N.R. Merchant | Improvement in the machine for sowing or planting ruta-baga and other seeds or grain | crop planters | |