170 A.2d 148 WILLARD NISBET vs. ROBERT A. LINBERG Supreme Judicial Court of Maine. Cumberland. Opinion, February 7, 1961. Brokers. Commissions. Effective Cause of Sale. Abandonement. M.R.C.P. 50 (b) (c). A broker with an open listing who has informed a prospect that a property is for sale and has furnished his seller with the name […]