Microphones

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Transducers of moving-armature or moving-core type > Microphones

CPC:

Transducers of moving-armature or moving-core type (acoustic diaphragm of magnetisable material directly coacting with electromagnet H04R13/00) > Microphones

No child classifications to compare. This is a leaf node in both IPC and CPC.