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| Patents for Abraham Vanderbeek | |||||
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| Number | Date | Patentee | Title | Type | |
| 461,201 | Oct. 13, 1891 | A.D. Pentz | Rotary attachment for milling-machines | milling machine accessories | |
| 461,202 | Oct. 13, 1891 | A.D. Pentz | Boring-engine | milling machines | |