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| Patents for H. D. Chase | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,279,286 | Sep. 17, 1918 | F.M. Davis | Duplex Milling Machine | ||
 | 1,287,148 | Dec. 10, 1918 | P. Waldner | Hand Shaft Planer | |
 | 1,376,861 | May 03, 1921 | F.M. Davis | Universal duplex milling-machine | |