1398032

Information

• Patent Grant
• 1398032

• References
• Source

• Patent Number

  1,398,032

• Date Filed

  Not available

• Date Issued

  Tuesday, November 22, 1921
  103 years ago

• CPC

  • H01K1/22 - Lamp stems

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 065 - Glass manufacturing
  • 174 - Electricity: conductors and insulators
  • 220 - Receptacles