US PATENT SUBCLASS 330 / 74
.~ Separate signal inputs to series devices


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



330 /   HD   AMPLIFIERS

70  DF  ANODE ENERGIZED THROUGH DISCHARGE PATH OF CONTROLLED VACUUM TUBE {3}
74.~ Separate signal inputs to series devices


DEFINITION

Classification: 330/74

(under subclass 70) Subject matter including at least two separate input circuits for each of two series energized vacuum tube amplifying devices.

(1) Note. A balanced (or push-pull) input circuit is treated as a single input circuit in this class and not as two separate input circuits.

SEE OR SEARCH THIS CLASS, SUBCLASS:

69, for sum and difference amplifiers.

147, for amplifiers with plural signal inputs. See the notes and search notes thereunder.