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| All Patents in class 19/21 | |||||
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| Number | Date | Patentee | Title | Type | |
| 8,214X | May 23, 1834 | R. Miller | Cleaning and breaking flax and hemp | flax and hemp machines | |
| 319 | Jul. 31, 1837 | E.J. Horn, A.T. Mixsell, C. Warner | Improvement in Machines for Breaking and Dressing Hemp and Flax | flax and hemp machines | |