US PATENT SUBCLASS 220 / 621
.~.~.~ Sidewall and end wall have interlocking grooves


Current as of: June, 1999
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220 /   HD   RECEPTACLES

600  DF  END WALL STRUCTURE {8}
610  DF  .~ Joint or seam between sidewall and end wall {6}
615  DF  .~.~ Interlocked joint {6}
621.~.~.~ Sidewall and end wall have interlocking grooves


DEFINITION

Classification: 220/621

Sidewall and end wall have interlocking grooves:

(under subclass 615) Receptacle wherein a depression or channel is formed in the sidewall or end wall which matingly engages a similar depression or channel formed in the other wall.

(1) Note. The mating depressions or channels are usually formed simultaneously in the sidewall and end wall.