148 A.2d 916 Udylite Corporation, Appellant, v. Philadelphia Zoning Board of Adjustment. Supreme Court of Pennsylvania.Argued January 5, 1959. March 16, 1959. Municipalities — Zoning — Non-conforming use — Change — Variance. In this zoning case, in which it appeared that a non-conforming use of the property was permissible, that the tenant had used it […]