US PATENT SUBCLASS 206 / 439
.~ With gas permeable cover

Current as of: June, 1999
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206 /   HD   SPECIAL RECEPTACLE OR PACKAGE

438  DF  FOR BODY TREATMENT ARTICLE OR MATERIAL (I.E., "SURGICAL" OR THERAPEUTIC TYPE) {4}
439.~ With gas permeable cover

DEFINITION

Classification: 206/439

(under subclass 438) A container wherein at least a portion of the container material permits the ingress or egress of a gaseous state substance.

(1) Note. Generally the gas serves to treat, or protect against treatment of, the content.