197118 ⎘
Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooter, buzzer driven by water or other liquids
SOUND QUALITY OR QUALITY CONTROL APPARATUS, CONTROL METHOD, AND PROGRAM FOR MUSICAL INSTRUMENT OR LIKE
#2Display device and television device
#3Low-frequency broadband sound source for underwater navigation and communication
#4Hydroacoustic device
#5Orthosonic thrust apparatus and method