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| Patents for Alexander Dey | |||||
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| Picture | Number | Date | Patentee | Title | |
 | GB-188,414,825 | Nov. 11, 1884 | A. Dey | Razor-strop machine | |
 | 389,291 | Sep. 11, 1888 | A. Dey | Razor-sharpening machine | |
 | CA-31,701 | Jul. 02, 1889 | A. Dey | Razor sharpening machine | |
 | 411,587 | Sep. 24, 1889 | A. Dey | Razor-sharpening machine | |