US PATENT SUBCLASS 351 / 204
.~ For interpupillary distance measuring or lens positioning

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

200  DF  EYE EXAMINING OR TESTING INSTRUMENT {7}
204.~ For interpupillary distance measuring or lens positioning

DEFINITION

Classification: 351/204

For interpupillary distance measuring or lens positioning:

(under subclass 200) Subject matter including instruments for ascertaining the accurate distance between the pupils of a patient's eyes so that spectacle frames and/or eyeglass lenses will be properly related to the pupils.

(1) Note. Included here are instruments to accurately determine the best size and vision field placement of multifocal segments.

SEE OR SEARCH CLASS

33, Geometrical Instruments,

200, for spectacle gauges.