H03G3/06 - CPC Classification Index

ClassID:

220231 ⎘

H03G3/06 - CPC Classification

Classification description:

Gain control in amplifiers or frequency changers without distortion of the input signal; Manually-operated control in untuned amplifiers having discharge tubes

Sub-classes:

H03G3/08 » incorporating negative feedback 5

Recent Application in this class:

20180084325

2018-03-22

High fidelity, professional grade microphone system for direct coupling to recording components

20140219477

2014-08-07

Guitar amplifier

20130028447

2013-01-31

Musical instrument master volume amplifier

20110317854

2011-12-29

Speaker voume control with inidividual input and output impedance converters

20110013782

2011-01-20

Speaker system and amplifier

20070228988

2007-10-04

Vacuum tube circuit