US PATENT SUBCLASS 356 / 325
.~.~.~ Prior to testing

Current as of: June, 1999
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356 /   HD   OPTICS: MEASURING AND TESTING

300  DF  BY DISPERSED LIGHT SPECTROSCOPY {10}
319  DF  .~ Utilizing a spectrophotometer (i.e., plural beam) {3}
323  DF  .~.~ Having beam modulation {2}
325.~.~.~ Prior to testing

DEFINITION

Classification: 356/325

Prior to testing:

(under subclass 323) Subject matter where the modulation of the beam occurs before the radiation enters the tested specimen.