144 A. 274 Ladner et al. v. Siegel et al. Supreme Court of Pennsylvania.October 1, 1928. November 26, 1928. Declaratory judgment — Construction of decree — Jurisdiction — Res judicata — Moot questions — Advisory opinions — Act of June 18, 1923, P. L. 840. 1. In the application of the Declaratory Judgment Act, a […]