US PATENT SUBCLASS 356 / 417
.~.~ Included with sample excitation

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

402  DF  BY SHADE OR COLOR {10}
416  DF  .~ With color transmitting filter {4}
417.~.~ Included with sample excitation

DEFINITION

Classification: 356/417

Included with sample excitation:

(under subclass 416) Subject matter including a flame producer or an electrical excitation means wherein a specimen is burned or excited to produce visible radiation for analysis by light intensity or illumination measurement means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

213+, for photometers, per se.

315, for flame spectroscopy.