DIFF Subgroup
G08C 23/02 using infrasonic, sonic or ultrasonic waves
Introduced: January 1995
Title
Titles differ between systems:
IPC: using acoustic waves
CPC: using infrasonic, sonic or ultrasonic waves
Full Title
Full titles differ between systems:
IPC:
Non-electric signal transmission systems, e.g. optical systems > using acoustic waves
CPC:
Non-electrical signal transmission systems, e.g. optical systems > using infrasonic, sonic or ultrasonic waves
No child classifications to compare. This is a leaf node in both IPC and CPC.