US PATENT SUBCLASS 52 / 553
.~ With spacing or space-forming feature

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

518  DF  LAPPED MULTIPLANAR SURFACING; E.G., SHINGLE TYPE {7}
553.~ With spacing or space-forming feature

DEFINITION

Classification: 52/553

(under subclass 518) Structure including a feature forming a space within or under a facing section or for spacing one facing section or portion thereof from another or from the supporting substructure, e.g., brace, filler or drain.

SEE OR SEARCH THIS CLASS, SUBCLASS:

302.1+, for a construction with a passage between its interior and the ambient and see the subclasses listed under "SEARCH THIS CLASS, SUBCLASS" for other constructions with passage forming means.