CPC Subgroup Additional Only
H04R 2205/021 Aspects relating to docking-station type assemblies to obtain an acoustical effect, e.g. the type of connection to external loudspeakers or housings, frequency improvement
Full Title
Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups > Aspects relating to docking-station type assemblies to obtain an acoustical effect, e.g. the type of connection to external loudspeakers or housings, frequency improvement