Cathode for electron tube

Cathode for electron tube

Cathode for electron tube

Cathode for electron tube

Cathode for electron tube

Cathode for electron tube

Cathode for electron tube and manufacturing method thereof

Cathode for electron tube and method for manufacturing the same

Cathode for electron tube and method of preparing the same

Cathode for electron tube having an electron-emission layer incl

Cathode for electron tube having specific emissive material

Cathode for magnetron

Cathode in a cathode ray tube

Cathode in cathode ray tube

Cathode in electron tube with actinoid metal(s) or...

Cathode including a solid body

Cathode material including rare earth metal used as electron...

Cathode member and electron tube having the cathode member mount

Cathode ray tube

Cathode ray tube comprising a cathode of a composite material