US PATENT SUBCLASS 327 / 81
.~.~.~.~ With transistor

Current as of: June, 1999
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327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

1  DF  SPECIFIC SIGNAL DISCRIMINATING (E.G., COMPARING, SELECTING, ETC.) WITHOUT SUBSEQUENT CONTROL {11}
50  DF  .~ By amplitude {9}
77  DF  .~.~ Input signal compared to single fixed reference {10}
80  DF  .~.~.~ Reference determined by threshold of single circuit element {1}
81.~.~.~.~ With transistor

DEFINITION

Classification: 327/81

With transistor:

(under subclass 80) Subject matter wherein the single electrical component is a three terminal semiconductor device composed of n or p type material.

SEE OR SEARCH CLASS

257, Active Solid-State Devices (e.g., Transistors, Solid-State Diodes), appropriate subclasses for transistor structure details.