WD Pennsylvania February 1973 casesKnuckles v. WaltersFekete v. United States Steel CorporationWestern Pennsylvania National Bank v. United StatesArtman v. International Harvester CompanyUnited Transp. U. v. Pittsburgh, Chartiers Y. Ry.Copperweld Steel Co. v. Demag-Mannesmann-BoehlerKolman v. KolmanGuglielmo v. Scotti & Sons, Inc.