Acoustic indicator of vacuum level in containers
Aircraft tail stand warning system
Audible push-up detector
Automatic flare signal apparatus
Clicker for indicating position of arrow
Control lever for generating a level sound
Cooking and whistling knob therefor
Danger alarm device
Fire extinguisher support mechanism incorporating an audible ala
Flywheel impelled cycle signal for appliance
Hot bearing alarm
Incipient bearing failure indicator
Lid knob of pressure cooker
Musical tea kettle
Particle flow monitor
Particle monitoring system
Passive personal alarm device
Seat belt tension sensing device
Swing speed analyzer
Tape cartridge including edge marked magnetic tape