(under subclass 503) Structure including a distinct facing layer formed of solid block-like modules which do not have openings communicating with the continuous passage.
SEE OR SEARCH THIS CLASS, SUBCLASS:
270+, for a construction of sectional units enclosing an area.
378+, for a cast in situ structure with a distinct section and dissimilar tie.
384+, for a facing of veneer tiles held by sheetlike backer.
390+, for an adhesively secured facing tile.
424+, for bonded together laterally related modules.
