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| Patents for Benjamin R. Purvin | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,952,182 | Mar. 27, 1934 | B.R. Purvin | Grinding Machine | grinding machines | |
| 2,444,474 | Jul. 06, 1948 | B.R. Purvin | Fluid pressure device | ||