Incandescent lamp filament incorporating hafnium

Incandescent lamp filament with surface crystallites and method

Incandescent lamp leads of dispersion strengthened copper wires

Incandescent lamp with improved press seal

Incandescent light bulb with variable pitch coiled filament

Increasing the oxidation resistance of molybdenum and its use fo

Indirectly heated cathode for a CRT having high purity...

Indirectly heated cathode for a gas discharge tube

Indirectly heated cathode with a thermal absorption layer on...

Indirectly heated dispenser metal capillary cathode for electric

Indirectly heated electrode for gas discharge tube

Indirectly heated filamentary cathode

Indirectly-heated cathode device for electron tubes

Indirectly-heated cathode heater structure for a cathode ray tub

Industrial hollow cathode

Inlead construction for electric lamp

Inorganic spark chamber frame and method of making the same

Insulative barrier useful in field emission displays for reducin

Integral grid/cathode for vacuum tubes

Ion beam source