US PATENT SUBCLASS 220 / 786
.~.~.~ Apertured interlock

Current as of: June, 1999
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220 /   HD   RECEPTACLES

200  DF  CLOSURES {45}
780  DF  .~ Removable closure situated by resilient distortion and retained by preformed configuration (e.g., detent) {9}
784  DF  .~.~ Noncontinuous interlock along perimeter of closure, closure support juncture {4}
786.~.~.~ Apertured interlock

DEFINITION

Classification: 220/786

Apertured interlock:

(under subclass 784) Subject matter wherein the closure or closure support includes an opening in the wall material intended to form part of the interlock.