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| Patents for Dake Engine Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 363,368 | May 24, 1887 | W.F. Dake | Double Reciprocating Square Engine | |
| 1,067,705 | Jul. 15, 1913 | F.J. Zellar | Engine | ||
 | 2,625,797 | Jan. 20, 1953 | J.H. Shaver, H.H. Poort | Hydraulic eductor valve | |