Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Main Group
H04R 13/00

Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet

Introduced: September 1968

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

Child Classifications

Navigate with arrow keys, Enter to open

  • H04R 13/02 Telephone receivers IPC+CPC Available in IPC and CPC