Compositions with a potassium superoxide base and their applicat
Dispensing system for alkali metals capable of releasing a...
Getter device
Getter device for frit sealed picture tubes
Getter for use in the manufacture of an electric discharge tube
Gettering device of manufacturing a color television display tub
Low temperature reusable hydrogen getter
Mercury dispensing device
Metal vapor generator
Nitrogenated evaporable getter devices with high fritting resist