US PATENT SUBCLASS 55 / 364
.~ Impervious bag with pervious portion

Current as of: June, 1999
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55 /   HD   GAS SEPARATION

361  DF  FLEXIBLE OR COLLAPSIBLE BAG TYPE {14}
364.~ Impervious bag with pervious portion

DEFINITION

Classification: 55/364

(under subclass 361) Apparatus wherein the separating member is comprised of both gas permeable and impermeable material, said impermeable material comprising the major portion of said member.