US PATENT SUBCLASS 164 / 258
.~.~.~ Including melting chamber receptacle

Current as of: June, 1999
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164 /   HD   METAL FOUNDING

253  DF  MEANS TO APPLY VACUUM DIRECTLY TO WORK OR TO HOLD OR MANIPULATE SHAPING MEANS {1}
254  DF  .~ Means applying vacuum or suction directly to molten casting material {2}
256  DF  .~.~ Enclosed system including a receptacle and mold {2}
258.~.~.~ Including melting chamber receptacle

DEFINITION

Classification: 164/258

(under subclass 256) Apparatus wherein the closed system includes a melting chamber receptacle.

(1) Note. The recitation of a melting furnace without claimed heating means is sufficient for this subclass.