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| Patents for August C. Ertner | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,391,143 | Dec. 18, 1945 | A.C. Ertner | Wrench | quick adjust wrenches | |
| CA-448,026 | Apr. 20, 1948 | A.C. Ertner | Wrench | quick adjust wrenches | |