US PATENT SUBCLASS 351 / 208
.~.~.~ Having means to detect proper distance or alignment (i.e., eye to instrument)

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}
205  DF  .~ Objective type {10}
206  DF  .~.~ Including eye photography {2}
208.~.~.~ Having means to detect proper distance or alignment (i.e., eye to instrument)

DEFINITION

Classification: 351/208

Having means to detect proper distance or alignment (i.e., eye to instrument):

(under subclass 206) Subject matter including means for indicating when the photographing instrument and the eye are at the proper alignment or distance with respect to each other.