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| All Patents in class 425/311 | |||||
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| Number | Date | Patentee | Title | Type | |
| 177,851 | May 23, 1876 | P.H. Kells | Improvement in brick and tile machines | manufacturing bricks and tiles | |
| RE8,867 | Aug. 19, 1879 | P.H. Kells | Improvement in brick-machines | brick and tile making machines | |
| 328,339 | Oct. 13, 1885 | P. Reuhl | Ornamental roller-die for moldings | wood compressing machines | |