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| All Patents in class 69/21 | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,462X | Mar. 06, 1833 | W. Berry | Softening hides | ||
| 8,216X | May 24, 1834 | J. Bonney | Breaking and working hides scouring leather | ||
| 8,464X | Oct. 23, 1834 | L.C. Dudley, S. Brooks | Tanning leather | ||
| 303,090 | Aug. 05, 1884 | J.J. White | Pattern Fillet Design | ||