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| Patents for Arthur Wellington Kiefer | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,353,246 | Sep. 21, 1920 | A.W. Kiefer | Pipe Wrench | pipe wrenches | |
| 1,380,566 | Jun. 07, 1921 | A.W. Kiefer | Pipe Wrench | pipe wrenches | |