US PATENT SUBCLASS 215 / 248
.~.~ With vent and air filter means

Current as of: June, 1999
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215 /   HD   BOTTLES AND JARS

200  DF  CLOSURES {32}
247  DF  .~ Self-sealing, piercable-type closure {2}
248.~.~ With vent and air filter means

DEFINITION

Classification: 215/248

(under subclass 247) Devices, wherein the closure means includes a vent means provided with a porous substance to cleanse air entering the receptacle in response to removal of contents therefrom.