US PATENT SUBCLASS 340 / 627
.~.~.~ Particle suspension in fluid

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

500  DF  CONDITION RESPONSIVE INDICATING SYSTEM {6}
540  DF  .~ Specific condition {18}
603  DF  .~.~ Fluent material {7}
627.~.~.~ Particle suspension in fluid {2}
628  DF  .~.~.~.~> Smoke {2}
631  DF  .~.~.~.~> Lubricant

DEFINITION

Classification: 340/627

Particle suspension in fluid:

(under subclass 603) Subject matter wherein the fluent material has particulate matter entrained therein.

SEE OR SEARCH CLASS

73, Measuring and Testing,

23.33, for gas analysis for solid matter; and subclasses 53.01+ for measuring particles in a liquid suspension.

356, Optics: Measuring and Testing,

441+, for an optical transmission or absorption liquid particle suspension measuring device.