US PATENT SUBCLASS 52 / 781.5
.~ Preformed concrete frame

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

474  DF  FACER HELD BY STIFFENER-TYPE FRAME {11}
781.5.~ Preformed concrete frame

DEFINITION

Classification: 52/781.5

Preformed concrete frame:

(under subclass 474) Structure in which the sustainer is of concrete and is preformed before use at the job site.

SEE OR SEARCH THIS CLASS, SUBCLASS:

319+, for a cast in situ ribbed barrier with a preformed, settable material sustainer.