US PATENT SUBCLASS 351 / 218
.~.~.~.~ Hand held type

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


351 /   HD   OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING

200  DF  EYE EXAMINING OR TESTING INSTRUMENT {7}
205  DF  .~ Objective type {10}
216  DF  .~.~ Including lens selectively insertable in optical path {1}
217  DF  .~.~.~ On rotary disc {1}
218.~.~.~.~ Hand held type

DEFINITION

Classification: 351/218

Hand held type:

(under subclass 217) Subject matter includes test instruments with rotatable multiple lens discs which are portable and held in hand during examination.

(1) Note. The above instruments may comprise an electrical light source adjustable mounted inside the handle or battery casing.

SEE OR SEARCH THIS CLASS, SUBCLASS:

221, for illuminators in objective testing.

SEE OR SEARCH CLASS

362, Illumination, appropriate subclasses.