(under the class definition) Subject matter comprising a closure or protective device for the opening in a mixing chamber designed to cooperate with a stirrer in the chamber.
(1) Note. The cover may be shaped to assist in the agitation or it may be provided with an aperture for the stirrer to extended therethrough into the chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
154.1+, for a stirrer mounted in a removable container closure.
349, for a protective cover for a stirrer when not in use.
