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| All Patents in class 123/70R | |||||
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| Number | Date | Patentee | Title | Type | |
| 626,120 | May 30, 1899 | A. Winton | Explosive Engine | internal combustion engine governors | |
| 651,062 | Jun. 05, 1900 | A. Adamson | Internal Combustion Engine | internal combustion engines | |
| 1,382,611 | Jun. 28, 1921 | B.F. Augustine | Rotary Gas Engine | rotary engines | |
| 1,557,395 | Oct. 13, 1925 | B.F. Augustine | Rotary Gas Engine | rotary engines | |
| 3,039,441 | Jun. 19, 1962 | A.F. Hurlburt, J.G. Padelt | Photographic Camera | cameras | |