CPC Main Group Additional Only
H04R 2201/00 Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
5 direct subcodes
Child Classifications
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- H04R 2201/003 Mems transducers or their use
- H04R 2201/02 Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
- H04R 2201/10 Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
- H04R 2201/34 Directing or guiding sound by means of a phase plug
- H04R 2201/40 Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups