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| All Patents in class 427/204 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,535 | Apr. 25, 1848 | J.G. Isham | Improvement in sand-paper | abrasives and holders | |
| 334,472 | Jan. 19, 1886 | J.S. Roberts | Process of Ornamenting Glass Surfaces | glass cutters | |