ARTHUR LISAK, PLAINTIFF-APPELLANT, v. MERCANTILE BANCORP, INC., ET AL., DEFENDANTS-APPELLEES. No. 86-3126.United States Court of Appeals, Seventh Circuit.Argued November 3, 1987. Decided November 25, 1987. Nicholas T. Kistos, Chicago, Ill., for plaintiff-appellant. Ronald N. Heftman, Martin, Craig, Chester Sonnenschein, Chicago, Ill., Carl N. Carpenter, Galvin, Galvin Leeney, Hammond, Ind., for defendants-appellees. Appeal from the United […]