US PATENT SUBCLASS 52 / 321
.~.~ Transverse retainer-engaging sustainers

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}
320  DF  .~ Block-type filler between sustainers {5}
321.~.~ Transverse retainer-engaging sustainers

DEFINITION

Classification: 52/321

(under subclass 320) Structure including a reinforcing member extending between and transversely of the sustainers, which member engages the sustainers and retains them in position.

SEE OR SEARCH THIS CLASS, SUBCLASS:

239+, 326, 335+, and 338+, for a sheetlike backer between sustainers.

475.1+, for a facer within a cornered peripheral frame.