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| All Patents in class 418/47 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,037,402 | Apr. 14, 1936 | J.L. Taylor | Blower | superchargers | |
| 2,377,299 | May 29, 1945 | A. Von Wangenheim | Rotary Pump | rotary pumps | |
| 2,497,247 | Feb. 14, 1950 | A. Von Wangenheim | Pump and Pressure Regulating Unit | vane pumps | |
| 2,774,309 | Dec. 18, 1956 | O.W. Scheflow, L.T. Stoyke | Pump | ||