US PATENT SUBCLASS 405 / 256
.~.~ Concrete

Current as of: June, 1999
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405 /   HD   HYDRAULIC AND EARTH ENGINEERING

229  DF  FOUNDATION {2}
231  DF  .~ Columnar structure (e.g., pier, pile) {7}
256.~.~ Concrete {1}
257  DF  .~.~.~> With form or casing

DEFINITION

Classification: 405/256

Concrete:

(under subclass 231) Elongated member composed of concrete, plain or reinforced.

SEE OR SEARCH THIS CLASS, SUBCLASS:

275, for concrete sheet piles.

SEE OR SEARCH CLASS

52, Static Structures (e.g., Buildings),

722, for a concrete shaft (e.g., utility pole).