US PATENT SUBCLASS 52 / 730.5
.~.~.~.~ Having interlocking feature

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}
730.1  DF  .~ Longitudinally related striplike sections {5}
730.3  DF  .~.~ Closure related (e.g., stile, sash bar, mullion, etc.) {2}
730.4  DF  .~.~.~ Forms hollow enclosure (e.g., tubular) {1}
730.5.~.~.~.~ Having interlocking feature

DEFINITION

Classification: 52/730.5

Having interlocking feature:

(under subclass 730.4) Subject matter, wherein each component is constructed in a fashion which permits it to be interfitted with another component for facilitation of assembly or disassembly.