Reaction cathode

Reflector-type lamp having reduced focus loss

Revolving anode for an X-ray tube filled with liquid metal

Rigid indented cylindrical cathode for X-ray tube

Rotary anode for an X-ray tube

Rotary anode for power X-ray tubes and method of making same

Rotary anode for X-ray tube and a method for manufacturing the s

Rotary anode structure for an X-ray tube

Rotatable anode for an X-ray tube composed of a coated, porous b

Rotatable X-ray target having off-focal track coating

Rotating anode for x-ray tubes

Rotating anode X-ray tube

Rotating X-ray target and method for preparing same

Rounded-end protuberances for field-emission cathodes

Scandate cathode and methods of making it

Scandate cathode exhibiting scandium segregation

Schottky emitter having extended life

Segmented electron emission device

Self-aligned double grids for vacuum tubes

Shaped electron emission from single crystal lanthanum hexaborid