US PATENT SUBCLASS 356 / 305
.~.~ With diffraction grating

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

300  DF  BY DISPERSED LIGHT SPECTROSCOPY {10}
302  DF  .~ For spectrographic (i.e., photographic) investigation {3}
305.~.~ With diffraction grating

DEFINITION

Classification: 356/305

With diffraction grating:

(under subclass 302) Subject matter which includes a diffraction grating as the dispersing element.

SEE OR SEARCH CLASS

359, Optics: Systems (Including Communication) and Elements,

566+, for diffraction grating, per se.