×

Electric discharge tube

  • US 2,686,886 A
  • Filed: 10/05/1950
  • Issued: 08/17/1954
  • Est. Priority Date: 10/05/1950
  • Status: Expired due to Term
First Claim
Patent Images

1. AN ELECTRIC DESCHARGE, TUBE COMPRISING A CATHODE ACTIVATED WITH ALKALINE EARTH METAL OXIDES, AND AN ELECTRODE HAVING A THIN SURFACE LAYER OF NON-OXIDIZED THORIUM TO SUPPRESS THERMAL ELECTRON EMISSION THEREFROM.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×