US PATENT SUBCLASS 73 / 23.37
.~.~ With spectrometer

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

23.2  DF  GAS ANALYSIS {15}
23.35  DF  .~ Gas chromatography {7}
23.37.~.~ With spectrometer

DEFINITION

Classification: 73/23.37

With spectrometer:

(under subclass 23.35) Subject matter combined with an instrument used to measure the spectral characteristics of light.