US PATENT SUBCLASS 137 / 805
.~.~ And causing change or correction of sensed condition

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

803  DF  FLOW AFFECTED BY FLUID CONTACT, ENERGY FIELD OR COANDA EFFECT (E.G., PURE FLUID DEVICE OR SYSTEM) {11}
804  DF  .~ Responsive to condition external of system {1}
805.~.~ And causing change or correction of sensed condition

DEFINITION

Classification: 137/805

(under subclass 804) Device or system wherein the signal or impulse activates said device or system or activates another mechanism for the purpose of varying the characteristic or state of the environment or for the purpose of restoring the characteristic or state of the environment to that which is desired.