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| All Patents in class 425/382R | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,276X | Dec. 02, 1835 | G.C. Baldwin | Composition of matter and making pencil points | ||
| 255,870 | Apr. 04, 1882 | P.H. Kells, J.M. Kells, A. Kells | Brick-machine | brick and tile making machines | |