US PATENT SUBCLASS 52 / 729.5
.~.~ Folded sheet material

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}
729.5.~.~ Folded sheet material

DEFINITION

Classification: 52/729.5

Folded sheet material:

(under subclass 729.1) Structure which is made from flat stock material which is bent along a fold line.