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| All Patents in class 184/6.6 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,229,569 | Jun. 12, 1917 | B.F. Augustine | Rotary Engine | rotary engines | |
| 1,557,395 | Oct. 13, 1925 | B.F. Augustine | Rotary Gas Engine | rotary engines | |