DAVENPORT, IA – On August 17, 2017, John Allen Abbott, 50, of Clinton, Iowa, was sentenced by United States District Court Judge Stephanie M. Rose to 240 months in prison for conspiracy to manufacture, distribute, and possess with intent to distribute 50 grams and more of actual methamphetamine and 500 grams and more of mixtures containing methamphetamine, announced United States Attorney Kevin E. VanderSchel.