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| Patents Granted on 1830-03-04 | |||||
| Number | Date | Patentee | Title | Type | |
| 5,860X | Mar. 04, 1830 | D. Parmelee | Grinding apples, corn, bark | bark processing machines | |
| 5,876X | Mar. 04, 1830 | J.D. Smith, C. Gibbs, T. Eldridge, J. Halladay | Flax Machine | flax and hemp machines | |
| NX-183,003,041 | Mar. 04, 1830 | D. Parmerlie | Grinding apples, corn, bark, &c. | bark processing machines | |