US PATENT SUBCLASS 52 / 220.6
.~ Suspended ceiling

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}
220.6.~ Suspended ceiling

DEFINITION

Classification: 52/220.6

Suspended ceiling:

(under subclass 220.1) Ceiling in which the utilities are carried in a space beneath a floor and sheetlike elements held by a grid hanging from the floor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

506+, for suspended ceilings.