US PATENT SUBCLASS 4 / 541.5-- .~.~ By aerating

US PATENT SUBCLASS 4 / 541.5
.~.~ By aerating

Current as of: June, 1999
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4 /	HD	BATHS, CLOSETS, SINKS, AND SPITTOONS

538	DF	TUBS {9}
541.1	DF	.~ Means for agitating or circulating water in a tub {4}
541.5		.~.~ By aerating

DEFINITION

Classification: 4/541.5

By aerating:

Subject matter under subclass definition 541.1 wherein the apparatus uses gas discharged from a pressure source to cause the water within the tub to churn or flow.

SEE OR SEARCH THIS CLASS, SUBCLASS:

541.4, for similar apparatus combined with liquid flow.

SEE OR SEARCH CLASS

261, Gas and Liquid Contact Apparatus,

75+, for a device specifically designed to produce an intimate contact between a gas and a liquid that is beyond aeration, and Digest 75 for a device using flowing liquid to aspirate gas.