US PATENT SUBCLASS 405 / 277
.~.~.~.~ C or I sections

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

258  DF  EARTH TREATMENT OR CONTROL {5}
272  DF  .~ Shoring, bracing, or cave-in prevention {6}
274  DF  .~.~ Sheet piles {2}
276  DF  .~.~.~ Metal {5}
277.~.~.~.~ C or I sections

DEFINITION

Classification: 405/277

C or I sections:

(under subclass 276) Method or apparatus wherein the elongated members are individually or collectively of channel or I-shape in cross section.