Dispenser cathode and method of manufacturing a dispenser cathod

Dispenser cathode for a grid-controlled electron tube and method

Dispenser cathode with emitting surface parallel to ion flow

Dispenser cathode with emitting surface parallel to ion flow and

Dispenser cathode with porous sintered compacted metal dispenser

Dispenser cathode, particularly a metal capillary cathode

Double layer electrode coil for a HID lamp and method of...

Dual mode gridded gun

Electric discharge lamp

Electric discharge lamps

Electric discharge tube

Electric discharge tube having a glass-sealed electric leadthrou

Electric discharge tube or discharge lamp and scandate...

Electric field emission cold cathode

Electric incandescent lamp

Electric lamp

Electric lamp

Electric lamp and method of making

Electric lamp having a coated external current conductor

Electric lamp having a current lead-in wire with a flattened...