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| Patents for August Charles Klopper | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,385,214 | Jul. 19, 1921 | A.C. Klopper | Gear Drive Socket Wrench | socket wrenches | |
| 1,420,635 | Jun. 27, 1922 | A.C. Klopper | Wrench | socket wrenches | |