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| Patents for Lena E. Berkovitch | |||||
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| Number | Date | Patentee | Title | Type | |
| 850,873 | Apr. 16, 1907 | J.L. Pringle | Miter-box | miter boxes | |
| 941,506 | Nov. 30, 1909 | C.B. Elmore | Change Speed Mechanism | metalworking speed changing mechanisms | |