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| Patents for Estwing Manufacturing Company, Inc.of- Rockford, IL | |||||
| Number | Date | Patentee | Title | Type | |
| 1,578,502 | Mar. 30, 1926 | E.O. Estwing | Hatchet | axes | |
| RE16,820 | Dec. 20, 1927 | E.O. Estwing | Hatchet | axes | |