DIFF Subgroup
H04R 11/14 Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Transducers of moving-armature or moving-core type > Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
CPC:
Transducers of moving-armature or moving-core type (acoustic diaphragm of magnetisable material directly coacting with electromagnet H04R13/00) > Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
No child classifications to compare. This is a leaf node in both IPC and CPC.