US PATENT SUBCLASS 340 / 870.42
.~.~ With feedback (e.g., reflex along line)

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

870.01  DF  CONTINUOUSLY VARIABLE INDICATING (E.G., TELEMETERING) {15}
870.4  DF  .~ With particular receiver (e.g., ratiometer) {3}
870.42.~.~ With feedback (e.g., reflex along line) {1}
870.43  DF  .~.~.~> Follow-up (e.g., circuit rebalanced when upset)

DEFINITION

Classification: 340/870.42

With feedback (e.g., reflex along line):

(under subclass 870.4) Subject matter having means to feedback a signal from the receiver to the transmitter.

(1) Note. The feedback, for example, may be negative feedback used to improve the stability of the system.

(2) Note. The feedback may be in any form of energy.