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| Patents for Augustus R. Ehlers | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 78,443 | Jun. 02, 1868 | A.R. Ehlers | Improvement in sawmills | |
![]() | RE6,185 | Dec. 22, 1874 | A.R. Ehlers | Improvement in sawmills | |