(under the class definition) Apparatus which includes or consists of either (1) a means for allowing otherwise trapped gases to escape from the apparatus or (2) means to form such escape means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
234, for core shaping means including a vent or vent forming means.
372, for vented chills.
397+, particularly subclass 400 for vented core supporting
means.
SEE OR SEARCH CLASS 249, Static Molds,
141, for a static mold which includes an auxiliary part for transmission of fluid, i.e., vent or drain.
