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| Patents for J. A. Bergstrom | |||||
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| Number | Date | Patentee | Title | Type | |
| 497,618 | May 16, 1893 | F.B. Wells | Wrench | quick adjust wrenches | |
| 512,911 | Jan. 16, 1894 | H. Shogren | Tool Holder | tool holders | |
| 521,123 | Jun. 05, 1894 | A. McCallum | Wrench | angle adjustable wrenches | |
| 527,643 | Oct. 16, 1894 | A.L. Winge | Wrench | quick adjust wrenches | |