197119 ⎘
Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooter, buzzer driven by mechanical means only
SOUND OUTPUT DEVICE FOR VEHICLE
#2SOUND GENERATING ASSEMBLY AND ELECTRONIC DEVICE HAVING THE SAME
#3Elastic Sound Generating Device
#4Pet toy with multiple sound producing features and method of entertaining an animal
#5Acoustic generator, acoustic generation device, and electronic device
#6Volumetric displacement transducer for an underwater acoustic source
#7Muffler sound simulator