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| Patents for Rudolph I. Berg | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,440,381 | Jan. 02, 1923 | O.E. Edstrom | Adjustable Wrench | quick adjust wrenches | |
| 1,459,583 | Jun. 19, 1923 | O.E. Edstrom | Adjustable Wrench | quick adjust wrenches | |