US PATENT SUBCLASS 52 / 729.4
.~.~.~ Wooden component

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

720.1  DF  SHAFT (I.E., ELONGATED RIGID STRUCTURE) {15}
729.1  DF  .~ I-beam {2}
729.2  DF  .~.~ Compound construction {2}
729.4.~.~.~ Wooden component

DEFINITION

Classification: 52/729.4

Wooden component:

(under subclass 729.2) Structure wherein the I-beam includes timber or a timber product.