US PATENT SUBCLASS 359 / 440
.~ Lens

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

436  DF  SCALE OR INDICIA READING {4}
440.~ Lens {1}
441  DF  .~.~> Movable or adjustable {1}

DEFINITION

Classification: 359/440

Lens:

(under subclass 436) Subject matter including a lens.

(1) Note. See subclass 642 for the definition of a lens.

(2) Note. The lens is usually employed to magnify the image of the scale markings or indicia.

SEE OR SEARCH THIS CLASS, SUBCLASS:

806, for optical reading devices including line markers.

809+, for lenses combined with diverse type art devices in general.

SEE OR SEARCH CLASS

73, Measuring and Testing, 327, for a reflector or magnifier used for sighting in a liquid level or depth gauge.