US PATENT SUBCLASS 52 / 737.1
.~ Girder, column, etc.

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}
737.1.~ Girder, column, etc. {4}
737.2  DF  .~.~> Plural or composite having attached intersecting member
737.3  DF  .~.~> Wood/metal composite
737.4  DF  .~.~> Having shell-like outer layer {1}
737.6  DF  .~.~> Box-type, channel, or angle, cross-section

DEFINITION

Classification: 52/737.1

Girder, column, etc.:

(under subclass 720.1) Structure wherein the shaft is designed to resist transverse or axial force and is intended to be used as a load-bearing unit.

SEE OR SEARCH THIS CLASS, SUBCLASS:

649.2+, 650.1+, and 651.07+, for three-dimensional openwork shafts.

721.1+, for concrete girders and columns.

729.1+, for girders in the shape of an "I" or "H".