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| Patents for Carl Hollweg | |||||
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| Number | Date | Patentee | Title | Type | |
| 364,414 | Jun. 07, 1887 | C. Hollweg | Pocket Knife | pocket knives | |
| 447,185 | Feb. 24, 1891 | C. Hollweg | Corkscrew | pocket and protected cork extractors | |