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| Patents for P. D. Kemer | |||||
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| Number | Date | Patentee | Title | Type | |
| 900,249 | Oct. 06, 1908 | O.C. Wysong | Abrasive apparatus | sanding machines | |
| 918,247 | Apr. 13, 1909 | O.C. Wysong | Abrasive apparatus | belt sanders | |