US PATENT SUBCLASS 383 / 113
.~.~ Barrier layer or ply (e.g., waterproof)

Current as of: June, 1999
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383 /   HD   FLEXIBLE BAGS

105  DF  WALL DETAILS {7}
109  DF  .~ Multi-layer or ply {6}
113.~.~ Barrier layer or ply (e.g., waterproof)

DEFINITION

Classification: 383/113

Barrier layer or ply (e.g., waterproof):

(under subclass 109) Subject matter wherein one of the plies prevents a specified substance from penetrating it.