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DIFF Subgroup
G10K 11/172

using resonance effects

Introduced: January 1995

Full Title

Full titles differ between systems:

IPC:

Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general > Methods or devices for protecting against, or for damping, noise or other acoustic waves in general > using resonance effects

CPC:

Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general > Methods or devices for protecting against, or for damping, noise or other acoustic waves in general (G10K11/36 takes precedence) > using resonance effects

No child classifications to compare. This is a leaf node in both IPC and CPC.