US PATENT SUBCLASS 220 / 256
.~ Superposed closures for common opening

Current as of: June, 1999
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220 /   HD   RECEPTACLES

200  DF  CLOSURES {45}
256.~ Superposed closures for common opening {3}
257  DF  .~.~> Destructible outer closure
258  DF  .~.~> Destructible inner closure
259  DF  .~.~> Hinged

DEFINITION

Classification: 220/256

(under subclass 200) Device wherein an opening is closed by a primary closure and a supplementary closure which may underlay or overlay the primary closure.