SIDE-O-MATIC UNLOADER v. ALIQUIPPA BLOCK

Arnold B. Christen, Washington, D.C. (Fisher, Christen, Goodson, Washington, D.C., Charles Hercus Just, York, Pa., Julian Miller, Brown, Critchlow, Flick, Peckham, Pittsburgh, Pa., on the brief), for

Elmer S. Utzler, Pittsburgh, Pa. (Wm. H. Parmelee, Pittsburgh, Pa., on the brief), for