84 N.W.2d 207 ANDREW V. KUCERA ET AL., APPELLEES, v. AGNES KAVAN, APPELLANT. No. 34106.Supreme Court of Nebraska. Filed July 12, 1957. 1. Vendor and Purchaser. An option founded upon a valuable consideration cannot be withdrawn before the time specified therein has expired. 2. ___. That the agreed amount to be paid for an option […]