US PATENT SUBCLASS 2 / 412
.~.~.~ By diverse laminae

Current as of: June, 1999
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2 /   HD   APPAREL

455  DF  GUARD OR PROTECTOR {12}
410  DF  .~ For wearer's head {14}
411  DF  .~.~ Including energy-absorbing means {4}
412.~.~.~ By diverse laminae

DEFINITION

Classification: 2/412

(under subclass 411) Device in which the cushion includes a plurality of layers of different material located between the wearer's head and the outside of the helmet.