US PATENT SUBCLASS 327 / 49
.~.~.~ With logic or bistable circuit

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}
39  DF  .~ By frequency {3}
47  DF  .~.~ Frequency detection {2}
49.~.~.~ With logic or bistable circuit

DEFINITION

Classification: 327/49

With logic or bistable circuit:

(under subclass 47) Subject matter wherein the frequency detection (a) includes a device performing Boolean functions such as AND, OR, or exclusive-OR or (b) utilizes a device having two stable states.

(1) Note. The combination of logic with specific frequency detection circuitry or function, not elsewhere classified, is classified here.

SEE OR SEARCH THIS CLASS, SUBCLASS:

185+, for particular stable state circuits including bistable.

SEE OR SEARCH CLASS

326, Electronic Digital Logic Circuitry,

93+, for clocking or synchronizing of one or more logic stages and appropriate subclasses for general digital logic circuitry not classified elsewhere.