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| Patents for Katharine Gerlach | |||||
| Number | Date | Patentee | Title | Type | |
| 883,237 | Mar. 31, 1908 | J. Reif, Jr. | Wrench | quick adjust wrenches | |
| 899,805 | Sep. 29, 1908 | J. Reif, Jr. | Wrench | quick adjust wrenches | |