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| All Patents in class 408/205 | |||||
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| Number | Date | Patentee | Title | Type | |
| 8,422 | Oct. 14, 1851 | G. Hammer | Machine for Cutting Cork | cork making machines | |
| 475,560 | May 24, 1892 | E.C. Heydenreich | Plug-Cutter | hollow bits | |
| 788,941 | May 02, 1905 | A.Y. Pearl | Auger | auger bits | |