US PATENT SUBCLASS 215 / 347
.~.~.~ Distinct layers

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

200  DF  CLOSURES {32}
316  DF  .~ Cap type {8}
341  DF  .~.~ With identifiable, integral, or separate gasket, seal, or liner {7}
347.~.~.~ Distinct layers

DEFINITION

Classification: 215/347

(under subclass 341) Devices, in which the gasket, seal or liner comprises a unitary layered structure wherein at least one of the layers or sheets is made of a material or has properties differing from other layers or sheets of the seal.