US PATENT SUBCLASS 359 / 357
.~.~.~ Having four or more components

Current as of: June, 1999
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359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

350  DF  HAVING SIGNIFICANT INFRARED OR ULTRAVIOLET PROPERTY {8}
355  DF  .~ Lens, lens system or component {1}
356  DF  .~.~ Infrared lens {1}
357.~.~.~ Having four or more components

DEFINITION

Classification: 359/357

Having four or more components:

(under subclass 356) Subject matter which includes four or more components which have significant properties in the infrared area of the electromagnetic spectrum.

SEE OR SEARCH THIS CLASS, SUBCLASS:

754+, for multiple component lenses, in general.