2491932

Information

• Patent Grant
• 2491932

• References
• Source

• Patent Number

  2,491,932

• Date Filed

  Not available

• Date Issued

  Tuesday, December 20, 1949
  75 years ago

• CPC

  • H01J19/40 - Screens for shielding

• US Classifications

  • 313 - Electric lamp and discharge devices