US PATENT SUBCLASS 219 / 707
.~.~.~ Gas or vapor


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

678  DF  MICROWAVE HEATING {15}
702  DF  .~ With control system {8}
704  DF  .~.~ Load condition sensor {6}
707.~.~.~ Gas or vapor


DEFINITION

Classification: 219/707

Gas or vapor:

(under subclass 704) Subject matter wherein the sensing device is responsive to (a) a state of matter being of an aeriform fluid having an ability to spread out and occupy an entire enclosure in which it is present or (b) an aeriform fluid having particles of liquid mixed within having an

ability to spread out and occupy an entire enclosure in which it is present.

(1) Note. Vapor may also be called fog, mist, humidity, or steam.

SEE OR SEARCH CLASS

73, Measuring and Testing, for the measuring and testing of fluid pressure.