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| Patents for Lena Perkins | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,184,758 | May 30, 1916 | J.A. Leland | Chuck | brace chucks | |
| 1,200,628 | Oct. 10, 1916 | J.A. Leland | Bench-drill brace | drill presses | |