US PATENT SUBCLASS 324 / 698
.~.~.~.~ To determine oil qualities

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

600  DF  IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS {8}
649  DF  .~ Lumped type parameters {6}
691  DF  .~.~ Using resistance or conductance measurement {12}
693  DF  .~.~.~ With object or substance characteristic determination using conductivity effects {5}
698.~.~.~.~ To determine oil qualities

DEFINITION

Classification: 324/698

To determine oil qualities:

(under subclass 693) Subject matter including means to evaluate the properties of a fluid containing petroleum or its derivatives (i.e., lubricants).

SEE OR SEARCH CLASS

73, Measuring and Testing,

53.05+, for lubricant testing, per se.