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All Patents in class 425/220 | |||||
Number | Date | Patentee | Title | Type | |
RE2,810 | Dec. 10, 1867 | P.H. Kells | Improved brick-machine | brick and tile making machines | |
81,511 | Aug. 25, 1868 | P.H. Kells | Improved brick-machine | manufacturing bricks and tiles |