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| All Patents in class 30/441 | |||||
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| Number | Date | Patentee | Title | Type | |
| 105,583 | Jul. 19, 1870 | W.W. Lyman | Improvement in Can-Openers | can and jar openers | |
| 280,241 | Jun. 26, 1883 | J. Rath | Can-opener | can and jar openers | |