US PATENT SUBCLASS 404 / 28
.~.~ Having preformed element layer

Current as of: June, 1999
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404 /   HD   ROAD STRUCTURE, PROCESS, OR APPARATUS

17  DF  PAVEMENT {9}
27  DF  .~ Including bed {2}
28.~.~ Having preformed element layer {2}
29  DF  .~.~.~> Blocks
30  DF  .~.~.~> Having irregular aggregate module

DEFINITION

Classification: 404/28

(under subclass 27) Bed structure wherein at least one stratum consists of either one or more selected or fabricated film, lamina, webs or modules.

SEE OR SEARCH THIS CLASS, SUBCLASS:

34+, for modular road structure and see further search notes thereunder.