DIFF Subgroup
B06B 3/04 involving focusing or reflecting
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Processes or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic or ultrasonic frequency > involving focusing or reflecting
CPC:
Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency > involving focusing or reflecting
No child classifications to compare. This is a leaf node in both IPC and CPC.