John Clingerman

John Clingerman has an extensive career in account management and sales, spanning several decades. John Clingerman began working as an Inside Sales Engineer at Rhodes Controls from January 1976 to June 1982, followed by a role as an Account Manager at Donovan Controls from November 1988 to December 1998. John Clingerman continued in this capacity at Cornerstone Controls from November 1987 until retirement. John Clingerman holds an educational background from Ellsworth College in Iowa Falls, Iowa.