202800 ⎘
Switches having at least one liquid contact with level of surface of contact liquid displaced by non-electrical contact-making plunger
Liquid filled bellows activated switch and voltage source made therefrom, timepieces and methods related thereto
#2Liquid filled bellows activated switch and voltage source made therefrom, timepieces and methods related thereto
#3Device forming a pressure sensor, method for producing such a sensor and application in the production of a touch screen