VA SEMICON

Emitters and Components for Electron Tubes Including Cathodes, Cathode End Hats and Heat Shield Assemblies, Glass and Ceramic-to-Metal Seals and Grid Coatings for Vacuum Tubes, Lossy Materials for Attenuators and Resistors, Metals and Their Alloys Utilized in the Fabricating and Sealing of Vacuum Tubes, Components for Thermoelectron Heat Generators, Electron Beam Welders, Spot Welding Points, and Heat Resistant Metals and Alloys and Products Fabricated Therefrom