US PATENT SUBCLASS 428 / 578
.~.~ Panel having nonrectangular perimeter

Current as of: June, 1999
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428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

544  DF  ALL METAL OR WITH ADJACENT METALS {31}
577  DF  .~ Intermediate article (e.g., blank, etc.) {3}
578.~.~ Panel having nonrectangular perimeter {2}
579  DF  .~.~.~> Disk
580  DF  .~.~.~> Symmetrical {1}

DEFINITION

Classification: 428/578

(under subclass 577) Subject matter in which the article has a length and a width each of which is greater than its thickness, has a finite perimeter, and has a margin which is other than four straight sides meeting each other at right angles.

SEE OR SEARCH THIS CLASS, SUBCLASS:

80+, for other nonrectangular sheets.

SEE OR SEARCH CLASS

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

656.1+, for a frame, per se.

285, Pipe Joints or Couplings,

424, for coupling stock-material* originally in sheet form.