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| Patents for Cornelius T. Williamson | |||||
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| Number | Date | Patentee | Title | Type | |
| 264,391 | Sep. 12, 1882 | C.T. Williamson | Combined spoon and corkscrew | combination cork extractors | |
| 274,539 | Mar. 27, 1883 | C.T. Williamson | Corkscrew | pocket and protected cork extractors | |