US PATENT SUBCLASS 220 / 651
.~ Internally attached reinforcing element

Current as of: June, 1999
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220 /   HD   RECEPTACLES

639  DF  SEPARATE REINFORCING ELEMENT {4}
651.~ Internally attached reinforcing element {3}
652  DF  .~.~> Extending between adjacent walls
653  DF  .~.~> Attached to and extending between opposite walls across the container
654  DF  .~.~> Circumferential

DEFINITION

Classification: 220/651

Internally attached reinforcing element:

(under subclass 639) Receptacle wherein the reinforcing element is secured to the interior of the container to strengthen the container.