Feeding system and feeding method for a submarine cable communic
Finger operated control system for hand-held appliances
Fire detector
Flasher switch with outage indication
Flashing locator switch control with built-in lamp operation tes
Flexible means for measuring liquid level
Float operated electrical switch assembly
Float switch
Fluid control system and controller and moisture sensor therefor
Fluid drop detecting reservoir tank
Fluid flow machine with an electromagnetically operated diaphrag
Fluid flow sensing and switching device
Fluid level activated float switch
Fluid level sensor circuitry
Fluid measuring system
Fluid sensitive shutdown for well pump
Fluid sensitive switching member
Foot controller with ophthalmic surgery interlock circuit...
Foot operated control apparatus
Foot operated control system for a multi-function device