Supreme Court of Pennsylvania April 1993 casesGuardian Life Ins. v. Bd. of FinanceZinc Corp. of Am. v. Pa. Dept. of E.RWaltman v. Pennsylvania Com'nCom. v. GriffinCommonwealth, Dept. of Transp. v. FosterCom. v. TobinState Police v. Court of Common PleasCity of Wilkes-Barre v. Firefighters