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| Patents for Peter T. Coffield | |||||
| Picture | Number | Date | Patentee | Title | |
| 428,803 | May 27, 1890 | P.T. Coffield | Tap | ||
| 456,284 | Jul. 21, 1891 | C.H. Paxson, P.T. Coffield | Gas Engine | ||
![]() | 579,789 | Mar. 30, 1897 | P.T. Coffield | Gas Engine | |