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| All Patents in class 271/226 | |||||
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| Number | Date | Patentee | Title | Type | |
| 8,681X | Mar. 11, 1835 | M. Caton, J.C. Rives | Register for Napier printing press | printer | |
| 8,681 | Jan. 27, 1852 | A.H. Copeland | Improvement in Sand Paper Holders | ||