.~ For spectrographic (i.e., photographic) investigation {3}
303
.~.~ With spectral analysis
DEFINITION
Classification: 356/303
With spectral analysis:
(under subclass 302) Subject matter which includes, additionally, the development of the spectrograph and the qualitative and quantitative analysis of the developed spectrograph, as by transmissive photometric examination.
SEE OR SEARCH THIS CLASS, SUBCLASS:
404, for the analysis for the various colors of a developed color negative in order to correct for the exposure variables in the production of colored prints.
443+, for the analysis of black and white developed negatives
of spectrograms.
SEE OR SEARCH CLASS
250, Radiant Energy,
316.1, for photos:graphic infrared detection or analysis of material; and subclasses 580+ for photos:graphic detection of invisible radiation or analysis of material where an examination of a developed spectrogram may be involved.
