197115 ⎘
Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooter, buzzer driven by gas; e.g. suction operated
Sub-classes:SMART VOLUME CONTROLLER AND METHOD THEREOF
#2Calibration Method and Sound Producing Module
#3A CONTAINER FOR A SUBSTANCE
#4WILD GAME CALLING DEVICE
#5Wild game calling device
#6PET BALL WITH ANCHORED NOISEMAKER
#7Duck call device
#8Dual-tone horn assemblies and methods of use
#9Method and system for cooling hot objects
#10Telescopic game call having adjustable resonant length
#11Acoustic device, and electronic device and image forming apparatus incorporating same
#12Acoustic device, and electronic device and image forming apparatus incorporating same
#13Acoustic device, and electronic device and image forming apparatus incorporating same
#14Flow controlled sound generation apparatus
#15Acoustic cleaning assembly for use in power generation systems and method of assembling same
#16Device for establishing noise in a motor vehicle
#17Sound producing device
#18Orthosonic thrust apparatus and method