US PATENT SUBCLASS 505 / 855
.~ Amplifier: (Class 330)


Current as of: June, 1999
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505 /   HD   SUPERCONDUCTOR TECHNOLOGY: APPARATUS, MATERIAL, PROCESS

825  DF  APPARATUS, PER SE, DEVICE, PER SE, OR PROCESS OF MAKING OR OPERATING SAME {36}
855.~ Amplifier: (Class 330)


DEFINITION

Classification: 505/855

Amplifier: (Class 330):

(under subclass 825) Subject matter wherein a variable electrical current or voltage input signal is applied to a device (i.e., amplifier) which controls a source of electrical energy applied to the same device from which is derived an enhanced output signal having substantially the same wave-form as the input signal.