US PATENT SUBCLASS 219 / 686
.~ Gas environment (e.g., pressurized, etc.)
Current as of:
June, 1999
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219 /
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ELECTRIC HEATING
678
DF
MICROWAVE HEATING
{15}
686
.~ Gas environment (e.g., pressurized, etc.)
DEFINITION
Classification: 219/686
Gas environment (e.g., pressurized, etc.):
(under subclass 678) Subject matter wherein an atmospheric condition other than air is surrounding a material or an object to be heated.
(1) Note. A gaseous environment in combination with an enclosure surrounding the material or object is classified within.
SEE OR SEARCH THIS CLASS, SUBCLASS:
440, for an electrical resistance heating vessel with pressure generating or maintaining means.
651, for inductive heating under a gas environment.
