US PATENT SUBCLASS 326 / 130
.~.~ Diode-transistor logic (DTL)

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326 /   HD   ELECTRONIC DIGITAL LOGIC CIRCUITRY

104  DF  FUNCTION OF AND, OR, NAND, NOR, or NOT {7}
124  DF  .~ Bipolar transistor (e.g., RTL, DCTL, etc.) {5}
130.~.~ Diode-transistor logic (DTL) {1}
131  DF  .~.~.~> With metal semiconductor junction diode (e.g., Schottky barrier, etc.)

DEFINITION

Classification: 326/130

Diode-transistor logic (DTL):

(under subclass 124) Subject matter wherein diodes are active switching elements responsive to respective input logic signals for providing logical function outputs which control output transistor elements.