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| Patents for C. Aultman & Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 202,853 | Apr. 23, 1878 | E.E. Miller, C.M. Miller | Portable Engine | |
 | 206,398 | Jul. 30, 1878 | C.M. Miller | Slide Valve for Steam Engines | |
| 227,441 | May 11, 1880 | C.M. Miller | Traction Engine | ||
 | 263,301 | Aug. 29, 1882 | C. Aultman | Valve-gear | |