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All Patents in class 415/183 | |||||
Number | Date | Patentee | Title | Type | |
2,301,857 | Nov. 10, 1942 | A.A. Criqui | Blower fan | ||
2,727,680 | Dec. 20, 1955 | R.D. Madison, H.C. Burgin, W.R. Elliot, R.D. Robson | Centrifugal fan |