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| All Patents in class 57/320 | |||||
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| Number | Date | Patentee | Title | Type | |
| 44,283 | Sep. 20, 1864 | E.C. Cleveland | Improvement in spinning-machines | ||
| 105,812 | Jul. 26, 1870 | P.J. Kent, N.W. Bancroft | Improvement in self-acting mules for spinning | ||
| 147,590 | Feb. 17, 1874 | N.W. Bancroft | Improvement in self-acting spinning-mules | ||