US PATENT SUBCLASS 52 / 339
.~.~ Arched backer

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

319  DF  CAST IN SITU CONCRETE BARRIER WITH LATERALLY PROJECTING RIB-TYPE SUSTAINER {8}
338  DF  .~ With backer supported on internal surface of flange web-type sustainer {1}
339.~.~ Arched backer

DEFINITION

Classification: 52/339

(under subclass 338) Structure in which the backer section is generally curvilinear and sheetlike and wherein the barrier material is supported from the convex side of the curved backer section.

SEE OR SEARCH THIS CLASS, SUBCLASS:

329+, for a similar structure with an additional facing

section.