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| Patents for Franz K. Krag | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,000,962 | May 14, 1935 | F.K. Krag | Can Or Jar Opener | can and jar openers | |
| 2,254,533 | Sep. 02, 1941 | F.K. Krag | Can Opener | can and jar openers | |