2240186

Information

• Patent Grant
• 2240186

• References
• Source

• Patent Number

  2,240,186

• Date Filed

  Not available

• Date Issued

  Tuesday, April 29, 1941
  84 years ago

• CPC

  • H01J31/40 - having grid-like image screen through which the electron ray passes and by which the ray is influenced before striking the output electrode

• US Classifications

  • 313 - Electric lamp and discharge devices