US PATENT SUBCLASS 220 / 646
.~ Externally attached sidewall reinforcing element

Current as of: June, 1999
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220 /   HD   RECEPTACLES

639  DF  SEPARATE REINFORCING ELEMENT {4}
646.~ Externally attached sidewall reinforcing element {3}
647  DF  .~.~> Spaced element supports container (e.g., cradle, end frame, etc.)
648  DF  .~.~> Circumferential band or belt {1}
650  DF  .~.~> Longitudinal element

DEFINITION

Classification: 220/646

Externally attached sidewall reinforcing element:

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

(1) Note. Structure disclosed as "protecting" the sidewall which also inherently reinforces the sidewall is classified in this and indented subclasses.