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United States Patent

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United States Patent 2,571,422
Issue Date: October 16, 1951

Current U.S. Class: 338/25 ; 24/567; 338/197; 338/28; 338/316; 374/135; 374/144
Current International Class: F01D 17/00 (20060101); F01D 17/08 (20060101)


For U.S. patent law, rules, and procedures see MPEP.

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