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U.S. Patent Nos. 8,434,389 & 8,991,284

European Patent No. 2396147

Canadian Patent No. 2,752,088

Japanese Patent No. 5699338

U.S. Patent Nos. 8,434,389 and 8,991,284

European Patent No. 2396147

Canadian Patent No. 2,752,088

Japanese Patent No. 5699338