467 A.2d 74 Springdale Township v. Allegheny County Board of Property Assessment, Appeals and Review, et al. West Penn Power Company, Appellant. Commonwealth Court of Pennsylvania.Argued October 3, 1983 October 26, 1983. Taxation — Exemption — Utility realty — Public Utility Realty Tax Act, Act of March 10, 1970, P.L. 168 — Indispensable party — […]