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| All Patents in class 69/20 | |||||
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| Number | Date | Patentee | Title | Type | |
| 93,937 | Aug. 17, 1869 | D.A. Wilcox | Improved centring-awl | layout tools | |
| 180,667 | Aug. 01, 1876 | J. Smith | Improvement in Tools for Shaving Leather | planes | |
| 440,240 | Nov. 11, 1890 | R.H. Houk | Tanner's Tool | leatherworking tools | |