3227848

Information

• Patent Grant
• 3227848

• References
• Source

• Patent Number

  3,227,848

• Date Filed

  Not available

• Date Issued

  Tuesday, January 4, 1966
  59 years ago

• CPC

  • H01J19/00 - Details of vacuum tubes of the types covered by group H01J21/00
  • H01J2893/0024 - Planar grids
  • Y10T29/49856 - Allowing assembled sphere to move in single plane only
  • Y10T29/49885 - with coating before or during assembling

• US Classifications

  • 219 - Electric heating
  • 029 - Metal working
  • 072 - Metal deforming