1660381

Information

• Patent Grant
• 1660381

• References
• Source

• Patent Number

  1,660,381

• Date Filed

  Not available

• Date Issued

  Tuesday, February 28, 1928
  97 years ago

• CPC

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

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 174 - Electricity: conductors and insulators
  • 220 - Receptacles
  • 285 - Pipe joints or couplings