US PATENT SUBCLASS 73 / 23.21
.~ With compensation detail (for error or drift correction, etc.)

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

23.2  DF  GAS ANALYSIS {15}
23.21.~ With compensation detail (for error or drift correction, etc.) {2}
23.22  DF  .~.~> For gas chromatography {4}
23.28  DF  .~.~> For density or specific gravity {1}

DEFINITION

Classification: 73/23.21

With compensation detail (for error or drift correction, etc.):

(under subclass 23.2) Subject matter including means for making a correction for an undesirable variation in a condition within an apparatus or in a test result due to such condition.