Projection coupler with contrast ribs
Projection display faceplate employing an optically transmissive
Projection television display tube
Projection television display tube with improved cooling
Projection television receiver with liquid-cooled lens
Projection television receiver with liquid-cooled lens
Projection tube having an insulating layer of magnesium oxide an
Projection tube whose coolant contains an ethylene oligomer
Protected lamp device
Protective metal halide film for high-pressure electrodeless dis
Proton source
Pulsed alkali metal vapor discharge lamp with ceramics outer env
Pulsed particle beam vacuum-to-air interface