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| All Patents in class 416/248 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 6,772X | Sep. 28, 1831 | J.Y. VanTuyl | Wind power applied to mills | ||
 | 11,511 | Aug. 08, 1854 | S.W. Ruggles | Fan-blower | |
 | 2,767,460 | Oct. 23, 1956 | R.A. Schultz | Turbine blade and method of making same | |