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| Patents for John G. Van Altena | |||||
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| Number | Date | Patentee | Title | Type | |
| 484,070 | Oct. 11, 1892 | J.G. Van Altena | Improvement in Tools For Turning the Covers of Fruit-Jars | jar wrenches | |
| 485,850 | Nov. 08, 1892 | J.G. Van Altena | Fruit Jar Holder | jar wrenches | |