US PATENT SUBCLASS 351 / 235
.~.~.~.~ Having plural disc carrier


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}
222  DF  .~ Subjective type {7}
233  DF  .~.~ Lens or filter selectively insertable in optical path {2}
234  DF  .~.~.~ Mounted on rotatable disc {1}
235.~.~.~.~ Having plural disc carrier


DEFINITION

Classification: 351/235

Having plural disc carrier:

(under subclass 233) Subject matter wherein two eye testing units, one for each eye, are supported on a standard, each of the units comprising a plurality of rotatable test lens discs, which are superposed and mounted on or in the same housing or baseplate on a common central axis.