DIFF Subgroup
G10K 11/02 Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
Introduced: September 1968
Full Title
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 > Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
Of 2 combined children, 1 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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