Supreme Court of Iowa April 15, 1992, 90-1370 (Humiston Grain Co. v. Rowley Interstate Transportation Co.)

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ANDREASEN, Justice.

Based upon the terms of an agreement between an owner and a carrier, the owner brought suit to recover equipment rental fees. The carrier counterclaimed for damages arising from the destruction of one of its trailers on theories of breach of contract, negligence, and bailment. The owner pled the affirmative defense of estoppel to the carrier’s counterclaim.