US PATENT SUBCLASS 436 / 143
.~ Total hydrocarbon, flammability, combustibility (e.g., air-fuel mixture, etc.)


Current as of: June, 1999
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436 /   HD   CHEMISTRY: ANALYTICAL AND IMMUNOLOGICAL TESTING

139  DF  HYDROCARBON {3}
143.~ Total hydrocarbon, flammability, combustibility (e.g., air-fuel mixture, etc.)


DEFINITION

Classification: 436/143

Total hydrocarbon, flammability, combustibility (e.g., air-fuel mixture, etc.):

(under subclass 139) Subject matter in which (a) the total hydrocarbon content of a sample is determined without regard to the identity of the hydrocarbon or (b) the flammability or combustibility of a mixture is determined, or (c) a combustible gas test.

(1) Note. A test broadly claimed as for combustible content should be originally classified in subclasses 147+ and desirably cross-referenced here if a hydrocarbon is disclosed.