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| Patents for William C. Preston | |||||
| Number | Date | Patentee | Title | Type | |
| D29,231 | Aug. 16, 1898 | W.G. Browne | Can Opener | combination cork extractors | |
| 654,089 | Jul. 17, 1900 | W.G. Browne | Can-opener | combination cork extractors | |