70 N.W.2d 149 SIEBRING MANUFACTURING COMPANY, appellee, v. CARLSON HYBRID CORN COMPANY, appellant. No. 48597.Supreme Court of Iowa. May 3, 1955. CONTRACTS: Rescission or abandonment — right where contract 1 executory. Where an original contract was executory at the time it was modified, the parties had a legal right to rescind or abandon it by […]