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| All Patents in class 416/213R | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,767,460 | Oct. 23, 1956 | R.A. Schultz | Turbine blade and method of making same | gas turbines | |
| 3,402,879 | Sep. 24, 1968 | J.W. Schroeter | Fan construction | ||