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| All Patents in class 416/147 | |||||
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| Number | Date | Patentee | Title | Type | |
| 425,449 | Apr. 15, 1890 | G.S. Nickum | Fan attachment | fans | |
| 2,382,535 | Aug. 14, 1945 | N.T. Bauer | Axial flow fan | ||
| 2,561,705 | Jul. 24, 1951 | E. Lochman | Propeller and method of propeller manufacture | ||