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United States Patent

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United States Patent 2,101,012
Issue Date: November 30, 1937

Current U.S. Class: 134/2 ; 134/29; 134/30; 134/8; 210/797
Current International Class: B01D 41/04 (20060101); B01D 41/00 (20060101)


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

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