Supreme Court of Pennsylvania December 1990 casesMitzelfelt v. KamrinCom. v. TresslerCom. v. BursickCom. v. BarkelbaughCom. v. StarkMyers v. Quaker State Oil RefiningMatter of Estate of EvasewCom. v. TurrellAM/PM Franchise Ass'n v. Atlantic Richfield Co.Com. v. SimonCom. v. BrowneDisciplinary Counsel v. CostiganPieper v. Ametek-Thermox InstrumentsCom. v. SinghCom. v. Slaughter