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| All Patents in class 60/39.11 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 176,588 | Apr. 25, 1876 | J. Brady | Gas-Engine | ||
| 403,294 | May 14, 1889 | J.C. Beckfeld, A. Schmid | Air and Gas Engine | ||
| 523,734 | Jul. 31, 1894 | W.A. Shaw | Reactionary Gas Motor Engine | ||