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| All Patents in class 239/411 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,400,328 | Dec. 13, 1921 | C.G. Sprado | Internal Combustion Engine | ||
| 1,814,443 | Jul. 14, 1931 | M.J. Goldberg | Fuel Injector for Oil Engines | fuel injection apparatus | |
| 3,022,694 | Feb. 27, 1962 | O.H. Nuss | Cycled jet cooling mechanism | radial arm saws | |