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| Patents for Ernst F. Kastenhuber | |||||
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| Number | Date | Patentee | Title | Type | |
| 424,274 | Mar. 25, 1890 | D.H. Coles, J.L. Coles | Parallel Jaw Tool | pliers | |
| 424,858 | Apr. 01, 1890 | J. Clark | Wrench | pipe wrenches | |