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| Patents for Anne E. O' Brian | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,183,525 | May 16, 1916 | F.C. Billings | Method of Manufacturing Pliers | pliers | |
| 1,225,695 | May 08, 1917 | L.G. Bayrer | Drop Hammer | drop hammers | |