US PATENT SUBCLASS 2 / 436
.~.~.~.~.~.~ By ventilation of shield

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}
15  DF  .~.~ Eye shields (e.g., hoodwinks or blinds, etc.) {4}
426  DF  .~.~.~ Goggles {7}
431  DF  .~.~.~.~ Included in shield for eyes {9}
435  DF  .~.~.~.~.~ Having antifog shield or lens {1}
436.~.~.~.~.~.~ By ventilation of shield {1}
437  DF  .~.~.~.~.~.~.~> Via tortuous air path

DEFINITION

Classification: 2/436

(under subclass 435) Device in which condensation is prevented by passing air over the surface via passageways that admit ambient air to pass over or near the surface.