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PCE
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DIFF Subgroup
G10K 11/08

Non-electric sound-amplifying devices, e.g. non-electric megaphones (amplifying by horns G10K11/02; amplifying by focusing G10K11/26)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Non-electric sound-amplifying devices, e.g. non-electric megaphones

CPC: Non-electric sound-amplifying devices, e.g. non-electric megaphones (amplifying by horns G10K11/02; amplifying by focusing G10K11/26)

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 > Non-electric sound-amplifying devices, e.g. non-electric megaphones

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 > Non-electric sound-amplifying devices, e.g. non-electric megaphones (amplifying by horns G10K11/02; amplifying by focusing G10K11/26)

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