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| Patents for Frederick E. Walden | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,333,517 | Mar. 09, 1920 | F.E. Walden | Pipe Wrench | alligator wrenches | |
| 1,432,813 | Oct. 24, 1922 | F.E. Walden | Wrench | angle adjustable wrenches | |
| 1,437,458 | Dec. 05, 1922 | F.E. Walden | Wrench | ratchet wrenches | |
| 1,453,898 | May 01, 1923 | F.E. Walden | Wrench | ratchet wrenches | |