US PATENT SUBCLASS 219 / 688
.~.~ Water

Current as of: June, 1999
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219 /   HD   ELECTRIC HEATING

678  DF  MICROWAVE HEATING {15}
687  DF  .~ Fluid heater {2}
688.~.~ Water

DEFINITION

Classification: 219/688

Water:

(under subclass 687) Subject matter wherein the fluid being heated is a chemical compound of two hydrogen atoms combined with one oxygen atom.

SEE OR SEARCH CLASS

126, Stoves and Furnaces,

344+, for water heaters.

392, Electric Resistance Heating Devices.