DIFF Subgroup
H04R 1/08 Mouthpieces; Attachments therefor
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Details of transducers > Mouthpieces; Attachments therefor
CPC:
Details of transducers, > Mouthpieces; Attachments therefor
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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