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United States Patent 3,468,473
Issue Date: September 23, 1969

Current U.S. Class: 415/129 ; 415/199.5; 415/77; 416/155; 416/157A; 416/157R; 416/193R; 416/210R; 60/226.1; 60/262
Current International Class: F01D 7/00 (20060101); F02K 1/66 (20060101); F02K 1/00 (20060101); F04D 29/32 (20060101)



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

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