US PATENT SUBCLASS 351 / 166
.~.~ With lens protective layers


Current as of: June, 1999
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351 /   HD   OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING

41  DF  SPECTACLES AND EYEGLASSES {29}
159  DF  .~ Ophtahalmic lenses or blanks {10}
166.~.~ With lens protective layers


DEFINITION

Classification: 351/166

(under subclass 159) Subject matter wherein one or both surfaces of a lens are covered with a layer or layers and impact resisting, transparent and hardened material; or wherein the lens comprises a pair of glass elements and an intermediate resilient reinforcing adhesive securing these elements together.