(December 18, 2017, 2:26 PM EST) -- MINNEAPOLIS — A federal judge in Minnesota on Dec. 6 held that two plaintiff insurance companies are entitled to pre-and post-judgment interest after successfully litigating how much they should contribute to a $6 million settlement of a products liability suit over defective plastic air-intake ducts (National Union Fire Insurance Company of Pittsburgh, et al. v. Donaldson Company Inc., No. 10-4948, D. Minn., 2017 U.S. Dist. LEXIS 201328)....