DIFF Main Group
H04R 23/00 Transducers other than those covered by groups H04R9/00 - H04R21/00
Introduced: September 1968
Title
Titles differ between systems:
IPC: Transducers other than those covered by groups
CPC: Transducers other than those covered by groups H04R9/00 - H04R21/00
Full Title
Full titles differ between systems:
IPC:
Transducers other than those covered by groups
CPC:
Transducers other than those covered by groups H04R9/00 - H04R21/00
CPC subdivides this area 5x more granularly than IPC with 4 additional codes.
4 codes are CPC-only extensions.
Child Classifications
Navigate with arrow keys, Enter to open
- H04R 23/02 Transducers using more than one principle simultaneously IPC+CPC Available in IPC and CPC