US PATENT SUBCLASS 73 / 23.42
.~.~ Detail of gas handling means
Current as of:
June, 1999
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73 /
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MEASURING AND TESTING
23.2
DF
GAS ANALYSIS
{15}
23.35
DF
.~ Gas chromatography {7}
23.42
.~.~ Detail of gas handling means
DEFINITION
Classification: 73/23.42
Detail of gas handling means:
(under subclass 23.35) Subject matter wherein significance is attributed to the means for confining, directing, or controlling the flow of gaseous material.