US PATENT SUBCLASS 220 / 372
.~.~.~ Screen

Current as of: June, 1999
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220 /   HD   RECEPTACLES

200  DF  CLOSURES {45}
367.1  DF  .~ Vent in closure {4}
371  DF  .~.~ With filter {1}
372.~.~.~ Screen

DEFINITION

Classification: 220/372

(under subclass 371) Device wherein the filtering element is constructed of screen-like material.