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| All Patents in class 81/3.47 | |||||
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| Number | Date | Patentee | Title | Type | |
| 433,015 | Jul. 29, 1890 | J. Meyer | Vent Bung and Bushing | auxiliary wrenches | |
| 913,191 | Feb. 23, 1909 | B.F. Bird | Combination-tool | combination cork extractors | |
| 7,614,323 | Nov. 10, 2009 | B.J. Warner | Corkscrew For One Handed Operation | lever cork extractors | |