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| All Patents of Type: pocket knives | |||||
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| Number | Date | Patentee | Title | Type | |
| 220,699 | Oct. 21, 1879 | C.L. Butler | Improvement in pocket-knives | pocket knives | |
| 364,414 | Jun. 07, 1887 | C. Hollweg | Pocket Knife | pocket knives | |