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| Patents for Delano H. Dugar | |||||
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| Picture | Number | Date | Patentee | Title | |
| 357,585 | Feb. 15, 1887 | D.H. Dugar | Steam Engine Governor | ||
 | 1,265,888 | May 14, 1918 | D.H. Dugar | Expansible Reamer | |
| 1,482,916 | Feb. 05, 1924 | D.H. Dugar | Tool Holder | ||