METHOD FOR DETERMINING VACUUM DEGREE THRESHOLD, AND MEDIUM, AND ELECTRONIC DEVICE

Smart Sound Appliance

Method and apparatus for controlling a variable displacement pump

Methods and systems for controlling supply of power generated by a weather dependent power generator

Voltage control device for fuel-cell vehicle

Automatic adjusting fuel boost pump

MEDICAL RESERVOIR LEVEL SENSOR

Device for dispensing a substance comprising a chamber defining a substance inlet, a substance outlet, an air inlet, and an air outlet, a piston located inside the chamber and whose movement causes the exit of both the substance and air to outside of the device