US PATENT SUBCLASS 52 / 220.2
.~ Load-bearing, prefabricated, abutting units with aligned utility passages

Current as of: June, 1999
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52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

220.1  DF  WALL, CEILING, OR FLOOR DESIGNED FOR UTILITIES {6}
220.2.~ Load-bearing, prefabricated, abutting units with aligned utility passages

DEFINITION

Classification: 52/220.2

Load-bearing, prefabricated, abutting units with aligned utility passages:

(under subclass 220.1) Unit which is constructed with; e.g., ducts that, upon assembly, line up with a matching unit to receive a utility therethrough.

SEE OR SEARCH THIS CLASS, SUBCLASS:

302.2, for drain or vent with an aligned passage.