H03G7/02 - CPC Classification Index

ClassID:

220296 ⎘

H03G7/02 - CPC Classification

Classification description:

Volume compression or expansion in amplifiers having discharge tubes

Sub-classes:

H03G7/04 » incorporating negative feedback 3

Recent Application in this class:

20200059205

Preamplifier circuit configuration

20090257605

MASTER VOLUME CONTROLLING DEVICE