Cathode structure and method of operating the same
Cathode structure for a multibeam cathode ray tube
Cylindrical cathode with segmented electron emissive surface and
Directly heated type cathode assembly
Flat thermionic cathode
Method for and product of electron emissive layer and multibeam
Modular electron discharge device
One-piece tab assembly for a cathode cup of an X-ray imaging...
Sliding spark source cold cathode electron gun and method