US PATENT SUBCLASS 331 / 142
.~.~ Double T bridge

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331 /   HD   OSCILLATORS

138  DF  BRIDGE TYPE {2}
140  DF  .~ R.C. or R.L. type {2}
142.~.~ Double T bridge

DEFINITION

Classification: 331/142

(under subclass 140) Oscillators wherein the feedback network comprises two T networks connected in parallel, one T network consisting of two resistors in series with a capacitor connected to the common connection of the resistor, the other T network consisting of two capacitors in series with a resistor connected to the common connection of the capacitors.