1439471

Information

• Patent Grant
• 1439471

• References
• Source

• Patent Number

  1,439,471

• Date Filed

  Not available

• Date Issued

  Tuesday, December 19, 1922
  102 years ago

• CPC

  • H01J5/30 - using packing-material
  • H01J2893/0047 - Closure other than lamp base

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 220 - Receptacles
  • 439 - Electrical connectors