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| All Patents in class 249/137 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 67,721 | Aug. 13, 1867 | S.E. Chubbuck | Improved apparatus for moulding plates of lead | |
| 1,601,793 | Oct. 05, 1926 | H.E. Cullen | Brick-molding machine | ||