(under subclass 374) Apparatus wherein the flask is one in which material for making a precision-casting (last-wax or investment casting) mold is to be contained therein.
(1) Note. An investment mold, which to be contained in the type of flask of this subclass, is characterized by the mold being formed around and embedding a destructible pattern.
SEE OR SEARCH THIS CLASS, SUBCLASS:
34+, for processes of forming molds wherein the pattern is destroyed to remove it.
SEE OR SEARCH CLASS
249, Static Molds, 54, for static dental type molds.
