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| All Patents in class 12/146L | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 170,980 | Dec. 14, 1875 | G.W. Badger | Improvement in boring-machines | |
 | 182,253 | Sep. 12, 1876 | H. Wight | Improvement in the methods of forming last-blanks | |