US PATENT SUBCLASS 392 / 402
.~.~.~ In-line connected open tank or container (i.e., nonpressurized)

Current as of: June, 1999
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392 /   HD   ELECTRIC RESISTANCE HEATING DEVICES

*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200) {11}
386  DF  .~ Vaporizer {7}
394  DF  .~.~ Liquid evaporant (e.g., water, etc.) {6}
402.~.~.~ In-line connected open tank or container (i.e., nonpressurized)

DEFINITION

Classification: 392/402

In-line connected open tank or container (i.e., nonpressurized):

(under subclass 394) Subject matter wherein the liquid is contained in a vessel connected to a source of liquid supply, and from which the vapor may be drawn off from an outlet or draw off pipe, and in which pressures equal to atmosphere may be maintained.

SEE OR SEARCH THIS CLASS, SUBCLASS:

325+, for line connected boiler.

SEE OR SEARCH CLASS

126, Stoves and Furnaces,

113, for air moisteners.

159, Concentrating Evaporators

32+, for open pans. 236, Automatic Temperature and Humidity Regulation,

44, for humidity control.

237, Heating Systems,

78, for air moistener.

261, Gas and Liquid Contact Apparatus,

127+, for external supply or removal of heat; subclasses 141+ for heat producer; digest 15 for duct humidifier.