US PATENT SUBCLASS 220 / 62.18
.~ Hollow side wall

Current as of: June, 1999
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220 /   HD   RECEPTACLES

62.11  DF  RECEPTACLE SIDE WALL MADE OF TWO OR MORE LAYERS OF MATERIAL PERMANENTLY ATTACHED TOGETHER {10}
62.18.~ Hollow side wall

DEFINITION

Classification: 220/62.18

Hollow side wall:

(under subclass 62.11) Subject matter wherein two of the layers are separated by an empty space.

SEE OR SEARCH THIS CLASS, SUBCLASS:

592.05, for a refrigerator cabinet having a hollow wall.

592.27, for a thermally insulated receptacle having vacuum insulation.